1 /* Remote target communications for serial-line targets in custom GDB protocol
3 Copyright (C) 1988-2013 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
20 /* See the GDB User Guide for details of the GDB remote protocol. */
23 #include "gdb_string.h"
29 #include "exceptions.h"
31 /*#include "terminal.h" */
34 #include "gdb-stabs.h"
35 #include "gdbthread.h"
37 #include "remote-notif.h"
40 #include "gdb_assert.h"
43 #include "cli/cli-decode.h"
44 #include "cli/cli-setshow.h"
45 #include "target-descriptions.h"
51 #include "event-loop.h"
52 #include "event-top.h"
58 #include "gdbcore.h" /* for exec_bfd */
60 #include "remote-fileio.h"
61 #include "gdb/fileio.h"
63 #include "xml-support.h"
65 #include "memory-map.h"
67 #include "tracepoint.h"
73 /* Temp hacks for tracepoint encoding migration. */
74 static char *target_buf
;
75 static long target_buf_size
;
77 /* The size to align memory write packets, when practical. The protocol
78 does not guarantee any alignment, and gdb will generate short
79 writes and unaligned writes, but even as a best-effort attempt this
80 can improve bulk transfers. For instance, if a write is misaligned
81 relative to the target's data bus, the stub may need to make an extra
82 round trip fetching data from the target. This doesn't make a
83 huge difference, but it's easy to do, so we try to be helpful.
85 The alignment chosen is arbitrary; usually data bus width is
86 important here, not the possibly larger cache line size. */
87 enum { REMOTE_ALIGN_WRITES
= 16 };
89 /* Prototypes for local functions. */
90 static void cleanup_sigint_signal_handler (void *dummy
);
91 static void initialize_sigint_signal_handler (void);
92 static int getpkt_sane (char **buf
, long *sizeof_buf
, int forever
);
93 static int getpkt_or_notif_sane (char **buf
, long *sizeof_buf
,
94 int forever
, int *is_notif
);
96 static void handle_remote_sigint (int);
97 static void handle_remote_sigint_twice (int);
98 static void async_remote_interrupt (gdb_client_data
);
99 void async_remote_interrupt_twice (gdb_client_data
);
101 static void remote_files_info (struct target_ops
*ignore
);
103 static void remote_prepare_to_store (struct regcache
*regcache
);
105 static void remote_open (char *name
, int from_tty
);
107 static void extended_remote_open (char *name
, int from_tty
);
109 static void remote_open_1 (char *, int, struct target_ops
*, int extended_p
);
111 static void remote_close (void);
113 static void remote_mourn (struct target_ops
*ops
);
115 static void extended_remote_restart (void);
117 static void extended_remote_mourn (struct target_ops
*);
119 static void remote_mourn_1 (struct target_ops
*);
121 static void remote_send (char **buf
, long *sizeof_buf_p
);
123 static int readchar (int timeout
);
125 static void remote_kill (struct target_ops
*ops
);
127 static int tohex (int nib
);
129 static int remote_can_async_p (void);
131 static int remote_is_async_p (void);
133 static void remote_async (void (*callback
) (enum inferior_event_type event_type
,
134 void *context
), void *context
);
136 static void remote_detach (struct target_ops
*ops
, char *args
, int from_tty
);
138 static void remote_interrupt (int signo
);
140 static void remote_interrupt_twice (int signo
);
142 static void interrupt_query (void);
144 static void set_general_thread (struct ptid ptid
);
145 static void set_continue_thread (struct ptid ptid
);
147 static void get_offsets (void);
149 static void skip_frame (void);
151 static long read_frame (char **buf_p
, long *sizeof_buf
);
153 static int hexnumlen (ULONGEST num
);
155 static void init_remote_ops (void);
157 static void init_extended_remote_ops (void);
159 static void remote_stop (ptid_t
);
161 static int ishex (int ch
, int *val
);
163 static int stubhex (int ch
);
165 static int hexnumstr (char *, ULONGEST
);
167 static int hexnumnstr (char *, ULONGEST
, int);
169 static CORE_ADDR
remote_address_masked (CORE_ADDR
);
171 static void print_packet (char *);
173 static void compare_sections_command (char *, int);
175 static void packet_command (char *, int);
177 static int stub_unpack_int (char *buff
, int fieldlength
);
179 static ptid_t
remote_current_thread (ptid_t oldptid
);
181 static void remote_find_new_threads (void);
183 static void record_currthread (ptid_t currthread
);
185 static int fromhex (int a
);
187 static int putpkt_binary (char *buf
, int cnt
);
189 static void check_binary_download (CORE_ADDR addr
);
191 struct packet_config
;
193 static void show_packet_config_cmd (struct packet_config
*config
);
195 static void update_packet_config (struct packet_config
*config
);
197 static void set_remote_protocol_packet_cmd (char *args
, int from_tty
,
198 struct cmd_list_element
*c
);
200 static void show_remote_protocol_packet_cmd (struct ui_file
*file
,
202 struct cmd_list_element
*c
,
205 static char *write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
);
206 static ptid_t
read_ptid (char *buf
, char **obuf
);
208 static void remote_set_permissions (void);
211 static int remote_get_trace_status (struct trace_status
*ts
);
213 static int remote_upload_tracepoints (struct uploaded_tp
**utpp
);
215 static int remote_upload_trace_state_variables (struct uploaded_tsv
**utsvp
);
217 static void remote_query_supported (void);
219 static void remote_check_symbols (struct objfile
*objfile
);
221 void _initialize_remote (void);
224 static void stop_reply_xfree (struct stop_reply
*);
225 static void remote_parse_stop_reply (char *, struct stop_reply
*);
226 static void push_stop_reply (struct stop_reply
*);
227 static void discard_pending_stop_replies (struct inferior
*);
228 static int peek_stop_reply (ptid_t ptid
);
230 static void remote_async_inferior_event_handler (gdb_client_data
);
232 static void remote_terminal_ours (void);
234 static int remote_read_description_p (struct target_ops
*target
);
236 static void remote_console_output (char *msg
);
238 static int remote_supports_cond_breakpoints (void);
240 static int remote_can_run_breakpoint_commands (void);
244 static struct cmd_list_element
*remote_cmdlist
;
246 /* For "set remote" and "show remote". */
248 static struct cmd_list_element
*remote_set_cmdlist
;
249 static struct cmd_list_element
*remote_show_cmdlist
;
251 /* Description of the remote protocol state for the currently
252 connected target. This is per-target state, and independent of the
253 selected architecture. */
257 /* A buffer to use for incoming packets, and its current size. The
258 buffer is grown dynamically for larger incoming packets.
259 Outgoing packets may also be constructed in this buffer.
260 BUF_SIZE is always at least REMOTE_PACKET_SIZE;
261 REMOTE_PACKET_SIZE should be used to limit the length of outgoing
266 /* True if we're going through initial connection setup (finding out
267 about the remote side's threads, relocating symbols, etc.). */
270 /* If we negotiated packet size explicitly (and thus can bypass
271 heuristics for the largest packet size that will not overflow
272 a buffer in the stub), this will be set to that packet size.
273 Otherwise zero, meaning to use the guessed size. */
274 long explicit_packet_size
;
276 /* remote_wait is normally called when the target is running and
277 waits for a stop reply packet. But sometimes we need to call it
278 when the target is already stopped. We can send a "?" packet
279 and have remote_wait read the response. Or, if we already have
280 the response, we can stash it in BUF and tell remote_wait to
281 skip calling getpkt. This flag is set when BUF contains a
282 stop reply packet and the target is not waiting. */
283 int cached_wait_status
;
285 /* True, if in no ack mode. That is, neither GDB nor the stub will
286 expect acks from each other. The connection is assumed to be
290 /* True if we're connected in extended remote mode. */
293 /* True if the stub reported support for multi-process
295 int multi_process_aware
;
297 /* True if we resumed the target and we're waiting for the target to
298 stop. In the mean time, we can't start another command/query.
299 The remote server wouldn't be ready to process it, so we'd
300 timeout waiting for a reply that would never come and eventually
301 we'd close the connection. This can happen in asynchronous mode
302 because we allow GDB commands while the target is running. */
303 int waiting_for_stop_reply
;
305 /* True if the stub reports support for non-stop mode. */
308 /* True if the stub reports support for vCont;t. */
311 /* True if the stub reports support for conditional tracepoints. */
312 int cond_tracepoints
;
314 /* True if the stub reports support for target-side breakpoint
316 int cond_breakpoints
;
318 /* True if the stub reports support for target-side breakpoint
320 int breakpoint_commands
;
322 /* True if the stub reports support for fast tracepoints. */
323 int fast_tracepoints
;
325 /* True if the stub reports support for static tracepoints. */
326 int static_tracepoints
;
328 /* True if the stub reports support for installing tracepoint while
330 int install_in_trace
;
332 /* True if the stub can continue running a trace while GDB is
334 int disconnected_tracing
;
336 /* True if the stub reports support for enabling and disabling
337 tracepoints while a trace experiment is running. */
338 int enable_disable_tracepoints
;
340 /* True if the stub can collect strings using tracenz bytecode. */
343 /* Nonzero if the user has pressed Ctrl-C, but the target hasn't
344 responded to that. */
348 /* Private data that we'll store in (struct thread_info)->private. */
349 struct private_thread_info
356 free_private_thread_info (struct private_thread_info
*info
)
362 /* Returns true if the multi-process extensions are in effect. */
364 remote_multi_process_p (struct remote_state
*rs
)
366 return rs
->multi_process_aware
;
369 /* This data could be associated with a target, but we do not always
370 have access to the current target when we need it, so for now it is
371 static. This will be fine for as long as only one target is in use
373 static struct remote_state remote_state
;
375 static struct remote_state
*
376 get_remote_state_raw (void)
378 return &remote_state
;
381 /* Description of the remote protocol for a given architecture. */
385 long offset
; /* Offset into G packet. */
386 long regnum
; /* GDB's internal register number. */
387 LONGEST pnum
; /* Remote protocol register number. */
388 int in_g_packet
; /* Always part of G packet. */
389 /* long size in bytes; == register_size (target_gdbarch (), regnum);
391 /* char *name; == gdbarch_register_name (target_gdbarch (), regnum);
395 struct remote_arch_state
397 /* Description of the remote protocol registers. */
398 long sizeof_g_packet
;
400 /* Description of the remote protocol registers indexed by REGNUM
401 (making an array gdbarch_num_regs in size). */
402 struct packet_reg
*regs
;
404 /* This is the size (in chars) of the first response to the ``g''
405 packet. It is used as a heuristic when determining the maximum
406 size of memory-read and memory-write packets. A target will
407 typically only reserve a buffer large enough to hold the ``g''
408 packet. The size does not include packet overhead (headers and
410 long actual_register_packet_size
;
412 /* This is the maximum size (in chars) of a non read/write packet.
413 It is also used as a cap on the size of read/write packets. */
414 long remote_packet_size
;
417 long sizeof_pkt
= 2000;
419 /* Utility: generate error from an incoming stub packet. */
421 trace_error (char *buf
)
424 return; /* not an error msg */
427 case '1': /* malformed packet error */
428 if (*++buf
== '0') /* general case: */
429 error (_("remote.c: error in outgoing packet."));
431 error (_("remote.c: error in outgoing packet at field #%ld."),
432 strtol (buf
, NULL
, 16));
434 error (_("Target returns error code '%s'."), buf
);
438 /* Utility: wait for reply from stub, while accepting "O" packets. */
440 remote_get_noisy_reply (char **buf_p
,
443 do /* Loop on reply from remote stub. */
447 QUIT
; /* Allow user to bail out with ^C. */
448 getpkt (buf_p
, sizeof_buf
, 0);
452 else if (strncmp (buf
, "qRelocInsn:", strlen ("qRelocInsn:")) == 0)
455 CORE_ADDR from
, to
, org_to
;
457 int adjusted_size
= 0;
458 volatile struct gdb_exception ex
;
460 p
= buf
+ strlen ("qRelocInsn:");
461 pp
= unpack_varlen_hex (p
, &ul
);
463 error (_("invalid qRelocInsn packet: %s"), buf
);
467 unpack_varlen_hex (p
, &ul
);
472 TRY_CATCH (ex
, RETURN_MASK_ALL
)
474 gdbarch_relocate_instruction (target_gdbarch (), &to
, from
);
478 adjusted_size
= to
- org_to
;
480 xsnprintf (buf
, *sizeof_buf
, "qRelocInsn:%x", adjusted_size
);
483 else if (ex
.reason
< 0 && ex
.error
== MEMORY_ERROR
)
485 /* Propagate memory errors silently back to the target.
486 The stub may have limited the range of addresses we
487 can write to, for example. */
492 /* Something unexpectedly bad happened. Be verbose so
493 we can tell what, and propagate the error back to the
494 stub, so it doesn't get stuck waiting for a
496 exception_fprintf (gdb_stderr
, ex
,
497 _("warning: relocating instruction: "));
501 else if (buf
[0] == 'O' && buf
[1] != 'K')
502 remote_console_output (buf
+ 1); /* 'O' message from stub */
504 return buf
; /* Here's the actual reply. */
509 /* Handle for retreving the remote protocol data from gdbarch. */
510 static struct gdbarch_data
*remote_gdbarch_data_handle
;
512 static struct remote_arch_state
*
513 get_remote_arch_state (void)
515 return gdbarch_data (target_gdbarch (), remote_gdbarch_data_handle
);
518 /* Fetch the global remote target state. */
520 static struct remote_state
*
521 get_remote_state (void)
523 /* Make sure that the remote architecture state has been
524 initialized, because doing so might reallocate rs->buf. Any
525 function which calls getpkt also needs to be mindful of changes
526 to rs->buf, but this call limits the number of places which run
528 get_remote_arch_state ();
530 return get_remote_state_raw ();
534 compare_pnums (const void *lhs_
, const void *rhs_
)
536 const struct packet_reg
* const *lhs
= lhs_
;
537 const struct packet_reg
* const *rhs
= rhs_
;
539 if ((*lhs
)->pnum
< (*rhs
)->pnum
)
541 else if ((*lhs
)->pnum
== (*rhs
)->pnum
)
548 map_regcache_remote_table (struct gdbarch
*gdbarch
, struct packet_reg
*regs
)
550 int regnum
, num_remote_regs
, offset
;
551 struct packet_reg
**remote_regs
;
553 for (regnum
= 0; regnum
< gdbarch_num_regs (gdbarch
); regnum
++)
555 struct packet_reg
*r
= ®s
[regnum
];
557 if (register_size (gdbarch
, regnum
) == 0)
558 /* Do not try to fetch zero-sized (placeholder) registers. */
561 r
->pnum
= gdbarch_remote_register_number (gdbarch
, regnum
);
566 /* Define the g/G packet format as the contents of each register
567 with a remote protocol number, in order of ascending protocol
570 remote_regs
= alloca (gdbarch_num_regs (gdbarch
)
571 * sizeof (struct packet_reg
*));
572 for (num_remote_regs
= 0, regnum
= 0;
573 regnum
< gdbarch_num_regs (gdbarch
);
575 if (regs
[regnum
].pnum
!= -1)
576 remote_regs
[num_remote_regs
++] = ®s
[regnum
];
578 qsort (remote_regs
, num_remote_regs
, sizeof (struct packet_reg
*),
581 for (regnum
= 0, offset
= 0; regnum
< num_remote_regs
; regnum
++)
583 remote_regs
[regnum
]->in_g_packet
= 1;
584 remote_regs
[regnum
]->offset
= offset
;
585 offset
+= register_size (gdbarch
, remote_regs
[regnum
]->regnum
);
591 /* Given the architecture described by GDBARCH, return the remote
592 protocol register's number and the register's offset in the g/G
593 packets of GDB register REGNUM, in PNUM and POFFSET respectively.
594 If the target does not have a mapping for REGNUM, return false,
595 otherwise, return true. */
598 remote_register_number_and_offset (struct gdbarch
*gdbarch
, int regnum
,
599 int *pnum
, int *poffset
)
602 struct packet_reg
*regs
;
603 struct cleanup
*old_chain
;
605 gdb_assert (regnum
< gdbarch_num_regs (gdbarch
));
607 regs
= xcalloc (gdbarch_num_regs (gdbarch
), sizeof (struct packet_reg
));
608 old_chain
= make_cleanup (xfree
, regs
);
610 sizeof_g_packet
= map_regcache_remote_table (gdbarch
, regs
);
612 *pnum
= regs
[regnum
].pnum
;
613 *poffset
= regs
[regnum
].offset
;
615 do_cleanups (old_chain
);
621 init_remote_state (struct gdbarch
*gdbarch
)
623 struct remote_state
*rs
= get_remote_state_raw ();
624 struct remote_arch_state
*rsa
;
626 rsa
= GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct remote_arch_state
);
628 /* Use the architecture to build a regnum<->pnum table, which will be
629 1:1 unless a feature set specifies otherwise. */
630 rsa
->regs
= GDBARCH_OBSTACK_CALLOC (gdbarch
,
631 gdbarch_num_regs (gdbarch
),
634 /* Record the maximum possible size of the g packet - it may turn out
636 rsa
->sizeof_g_packet
= map_regcache_remote_table (gdbarch
, rsa
->regs
);
638 /* Default maximum number of characters in a packet body. Many
639 remote stubs have a hardwired buffer size of 400 bytes
640 (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used
641 as the maximum packet-size to ensure that the packet and an extra
642 NUL character can always fit in the buffer. This stops GDB
643 trashing stubs that try to squeeze an extra NUL into what is
644 already a full buffer (As of 1999-12-04 that was most stubs). */
645 rsa
->remote_packet_size
= 400 - 1;
647 /* This one is filled in when a ``g'' packet is received. */
648 rsa
->actual_register_packet_size
= 0;
650 /* Should rsa->sizeof_g_packet needs more space than the
651 default, adjust the size accordingly. Remember that each byte is
652 encoded as two characters. 32 is the overhead for the packet
653 header / footer. NOTE: cagney/1999-10-26: I suspect that 8
654 (``$NN:G...#NN'') is a better guess, the below has been padded a
656 if (rsa
->sizeof_g_packet
> ((rsa
->remote_packet_size
- 32) / 2))
657 rsa
->remote_packet_size
= (rsa
->sizeof_g_packet
* 2 + 32);
659 /* Make sure that the packet buffer is plenty big enough for
660 this architecture. */
661 if (rs
->buf_size
< rsa
->remote_packet_size
)
663 rs
->buf_size
= 2 * rsa
->remote_packet_size
;
664 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
670 /* Return the current allowed size of a remote packet. This is
671 inferred from the current architecture, and should be used to
672 limit the length of outgoing packets. */
674 get_remote_packet_size (void)
676 struct remote_state
*rs
= get_remote_state ();
677 struct remote_arch_state
*rsa
= get_remote_arch_state ();
679 if (rs
->explicit_packet_size
)
680 return rs
->explicit_packet_size
;
682 return rsa
->remote_packet_size
;
685 static struct packet_reg
*
686 packet_reg_from_regnum (struct remote_arch_state
*rsa
, long regnum
)
688 if (regnum
< 0 && regnum
>= gdbarch_num_regs (target_gdbarch ()))
692 struct packet_reg
*r
= &rsa
->regs
[regnum
];
694 gdb_assert (r
->regnum
== regnum
);
699 static struct packet_reg
*
700 packet_reg_from_pnum (struct remote_arch_state
*rsa
, LONGEST pnum
)
704 for (i
= 0; i
< gdbarch_num_regs (target_gdbarch ()); i
++)
706 struct packet_reg
*r
= &rsa
->regs
[i
];
714 /* FIXME: graces/2002-08-08: These variables should eventually be
715 bound to an instance of the target object (as in gdbarch-tdep()),
716 when such a thing exists. */
718 /* This is set to the data address of the access causing the target
719 to stop for a watchpoint. */
720 static CORE_ADDR remote_watch_data_address
;
722 /* This is non-zero if target stopped for a watchpoint. */
723 static int remote_stopped_by_watchpoint_p
;
725 static struct target_ops remote_ops
;
727 static struct target_ops extended_remote_ops
;
729 /* FIXME: cagney/1999-09-23: Even though getpkt was called with
730 ``forever'' still use the normal timeout mechanism. This is
731 currently used by the ASYNC code to guarentee that target reads
732 during the initial connect always time-out. Once getpkt has been
733 modified to return a timeout indication and, in turn
734 remote_wait()/wait_for_inferior() have gained a timeout parameter
736 static int wait_forever_enabled_p
= 1;
738 /* Allow the user to specify what sequence to send to the remote
739 when he requests a program interruption: Although ^C is usually
740 what remote systems expect (this is the default, here), it is
741 sometimes preferable to send a break. On other systems such
742 as the Linux kernel, a break followed by g, which is Magic SysRq g
743 is required in order to interrupt the execution. */
744 const char interrupt_sequence_control_c
[] = "Ctrl-C";
745 const char interrupt_sequence_break
[] = "BREAK";
746 const char interrupt_sequence_break_g
[] = "BREAK-g";
747 static const char *const interrupt_sequence_modes
[] =
749 interrupt_sequence_control_c
,
750 interrupt_sequence_break
,
751 interrupt_sequence_break_g
,
754 static const char *interrupt_sequence_mode
= interrupt_sequence_control_c
;
757 show_interrupt_sequence (struct ui_file
*file
, int from_tty
,
758 struct cmd_list_element
*c
,
761 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
762 fprintf_filtered (file
,
763 _("Send the ASCII ETX character (Ctrl-c) "
764 "to the remote target to interrupt the "
765 "execution of the program.\n"));
766 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
767 fprintf_filtered (file
,
768 _("send a break signal to the remote target "
769 "to interrupt the execution of the program.\n"));
770 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
771 fprintf_filtered (file
,
772 _("Send a break signal and 'g' a.k.a. Magic SysRq g to "
773 "the remote target to interrupt the execution "
774 "of Linux kernel.\n"));
776 internal_error (__FILE__
, __LINE__
,
777 _("Invalid value for interrupt_sequence_mode: %s."),
778 interrupt_sequence_mode
);
781 /* This boolean variable specifies whether interrupt_sequence is sent
782 to the remote target when gdb connects to it.
783 This is mostly needed when you debug the Linux kernel: The Linux kernel
784 expects BREAK g which is Magic SysRq g for connecting gdb. */
785 static int interrupt_on_connect
= 0;
787 /* This variable is used to implement the "set/show remotebreak" commands.
788 Since these commands are now deprecated in favor of "set/show remote
789 interrupt-sequence", it no longer has any effect on the code. */
790 static int remote_break
;
793 set_remotebreak (char *args
, int from_tty
, struct cmd_list_element
*c
)
796 interrupt_sequence_mode
= interrupt_sequence_break
;
798 interrupt_sequence_mode
= interrupt_sequence_control_c
;
802 show_remotebreak (struct ui_file
*file
, int from_tty
,
803 struct cmd_list_element
*c
,
808 /* Descriptor for I/O to remote machine. Initialize it to NULL so that
809 remote_open knows that we don't have a file open when the program
811 static struct serial
*remote_desc
= NULL
;
813 /* This variable sets the number of bits in an address that are to be
814 sent in a memory ("M" or "m") packet. Normally, after stripping
815 leading zeros, the entire address would be sent. This variable
816 restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The
817 initial implementation of remote.c restricted the address sent in
818 memory packets to ``host::sizeof long'' bytes - (typically 32
819 bits). Consequently, for 64 bit targets, the upper 32 bits of an
820 address was never sent. Since fixing this bug may cause a break in
821 some remote targets this variable is principly provided to
822 facilitate backward compatibility. */
824 static unsigned int remote_address_size
;
826 /* Temporary to track who currently owns the terminal. See
827 remote_terminal_* for more details. */
829 static int remote_async_terminal_ours_p
;
831 /* The executable file to use for "run" on the remote side. */
833 static char *remote_exec_file
= "";
836 /* User configurable variables for the number of characters in a
837 memory read/write packet. MIN (rsa->remote_packet_size,
838 rsa->sizeof_g_packet) is the default. Some targets need smaller
839 values (fifo overruns, et.al.) and some users need larger values
840 (speed up transfers). The variables ``preferred_*'' (the user
841 request), ``current_*'' (what was actually set) and ``forced_*''
842 (Positive - a soft limit, negative - a hard limit). */
844 struct memory_packet_config
851 /* Compute the current size of a read/write packet. Since this makes
852 use of ``actual_register_packet_size'' the computation is dynamic. */
855 get_memory_packet_size (struct memory_packet_config
*config
)
857 struct remote_state
*rs
= get_remote_state ();
858 struct remote_arch_state
*rsa
= get_remote_arch_state ();
860 /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk
861 law?) that some hosts don't cope very well with large alloca()
862 calls. Eventually the alloca() code will be replaced by calls to
863 xmalloc() and make_cleanups() allowing this restriction to either
864 be lifted or removed. */
865 #ifndef MAX_REMOTE_PACKET_SIZE
866 #define MAX_REMOTE_PACKET_SIZE 16384
868 /* NOTE: 20 ensures we can write at least one byte. */
869 #ifndef MIN_REMOTE_PACKET_SIZE
870 #define MIN_REMOTE_PACKET_SIZE 20
875 if (config
->size
<= 0)
876 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
878 what_they_get
= config
->size
;
882 what_they_get
= get_remote_packet_size ();
883 /* Limit the packet to the size specified by the user. */
885 && what_they_get
> config
->size
)
886 what_they_get
= config
->size
;
888 /* Limit it to the size of the targets ``g'' response unless we have
889 permission from the stub to use a larger packet size. */
890 if (rs
->explicit_packet_size
== 0
891 && rsa
->actual_register_packet_size
> 0
892 && what_they_get
> rsa
->actual_register_packet_size
)
893 what_they_get
= rsa
->actual_register_packet_size
;
895 if (what_they_get
> MAX_REMOTE_PACKET_SIZE
)
896 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
897 if (what_they_get
< MIN_REMOTE_PACKET_SIZE
)
898 what_they_get
= MIN_REMOTE_PACKET_SIZE
;
900 /* Make sure there is room in the global buffer for this packet
901 (including its trailing NUL byte). */
902 if (rs
->buf_size
< what_they_get
+ 1)
904 rs
->buf_size
= 2 * what_they_get
;
905 rs
->buf
= xrealloc (rs
->buf
, 2 * what_they_get
);
908 return what_they_get
;
911 /* Update the size of a read/write packet. If they user wants
912 something really big then do a sanity check. */
915 set_memory_packet_size (char *args
, struct memory_packet_config
*config
)
917 int fixed_p
= config
->fixed_p
;
918 long size
= config
->size
;
921 error (_("Argument required (integer, `fixed' or `limited')."));
922 else if (strcmp (args
, "hard") == 0
923 || strcmp (args
, "fixed") == 0)
925 else if (strcmp (args
, "soft") == 0
926 || strcmp (args
, "limit") == 0)
932 size
= strtoul (args
, &end
, 0);
934 error (_("Invalid %s (bad syntax)."), config
->name
);
936 /* Instead of explicitly capping the size of a packet to
937 MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is
938 instead allowed to set the size to something arbitrarily
940 if (size
> MAX_REMOTE_PACKET_SIZE
)
941 error (_("Invalid %s (too large)."), config
->name
);
945 if (fixed_p
&& !config
->fixed_p
)
947 if (! query (_("The target may not be able to correctly handle a %s\n"
948 "of %ld bytes. Change the packet size? "),
950 error (_("Packet size not changed."));
952 /* Update the config. */
953 config
->fixed_p
= fixed_p
;
958 show_memory_packet_size (struct memory_packet_config
*config
)
960 printf_filtered (_("The %s is %ld. "), config
->name
, config
->size
);
962 printf_filtered (_("Packets are fixed at %ld bytes.\n"),
963 get_memory_packet_size (config
));
965 printf_filtered (_("Packets are limited to %ld bytes.\n"),
966 get_memory_packet_size (config
));
969 static struct memory_packet_config memory_write_packet_config
=
971 "memory-write-packet-size",
975 set_memory_write_packet_size (char *args
, int from_tty
)
977 set_memory_packet_size (args
, &memory_write_packet_config
);
981 show_memory_write_packet_size (char *args
, int from_tty
)
983 show_memory_packet_size (&memory_write_packet_config
);
987 get_memory_write_packet_size (void)
989 return get_memory_packet_size (&memory_write_packet_config
);
992 static struct memory_packet_config memory_read_packet_config
=
994 "memory-read-packet-size",
998 set_memory_read_packet_size (char *args
, int from_tty
)
1000 set_memory_packet_size (args
, &memory_read_packet_config
);
1004 show_memory_read_packet_size (char *args
, int from_tty
)
1006 show_memory_packet_size (&memory_read_packet_config
);
1010 get_memory_read_packet_size (void)
1012 long size
= get_memory_packet_size (&memory_read_packet_config
);
1014 /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an
1015 extra buffer size argument before the memory read size can be
1016 increased beyond this. */
1017 if (size
> get_remote_packet_size ())
1018 size
= get_remote_packet_size ();
1023 /* Generic configuration support for packets the stub optionally
1024 supports. Allows the user to specify the use of the packet as well
1025 as allowing GDB to auto-detect support in the remote stub. */
1029 PACKET_SUPPORT_UNKNOWN
= 0,
1034 struct packet_config
1038 enum auto_boolean detect
;
1039 enum packet_support support
;
1042 /* Analyze a packet's return value and update the packet config
1053 update_packet_config (struct packet_config
*config
)
1055 switch (config
->detect
)
1057 case AUTO_BOOLEAN_TRUE
:
1058 config
->support
= PACKET_ENABLE
;
1060 case AUTO_BOOLEAN_FALSE
:
1061 config
->support
= PACKET_DISABLE
;
1063 case AUTO_BOOLEAN_AUTO
:
1064 config
->support
= PACKET_SUPPORT_UNKNOWN
;
1070 show_packet_config_cmd (struct packet_config
*config
)
1072 char *support
= "internal-error";
1074 switch (config
->support
)
1077 support
= "enabled";
1079 case PACKET_DISABLE
:
1080 support
= "disabled";
1082 case PACKET_SUPPORT_UNKNOWN
:
1083 support
= "unknown";
1086 switch (config
->detect
)
1088 case AUTO_BOOLEAN_AUTO
:
1089 printf_filtered (_("Support for the `%s' packet "
1090 "is auto-detected, currently %s.\n"),
1091 config
->name
, support
);
1093 case AUTO_BOOLEAN_TRUE
:
1094 case AUTO_BOOLEAN_FALSE
:
1095 printf_filtered (_("Support for the `%s' packet is currently %s.\n"),
1096 config
->name
, support
);
1102 add_packet_config_cmd (struct packet_config
*config
, const char *name
,
1103 const char *title
, int legacy
)
1109 config
->name
= name
;
1110 config
->title
= title
;
1111 config
->detect
= AUTO_BOOLEAN_AUTO
;
1112 config
->support
= PACKET_SUPPORT_UNKNOWN
;
1113 set_doc
= xstrprintf ("Set use of remote protocol `%s' (%s) packet",
1115 show_doc
= xstrprintf ("Show current use of remote "
1116 "protocol `%s' (%s) packet",
1118 /* set/show TITLE-packet {auto,on,off} */
1119 cmd_name
= xstrprintf ("%s-packet", title
);
1120 add_setshow_auto_boolean_cmd (cmd_name
, class_obscure
,
1121 &config
->detect
, set_doc
,
1122 show_doc
, NULL
, /* help_doc */
1123 set_remote_protocol_packet_cmd
,
1124 show_remote_protocol_packet_cmd
,
1125 &remote_set_cmdlist
, &remote_show_cmdlist
);
1126 /* The command code copies the documentation strings. */
1129 /* set/show remote NAME-packet {auto,on,off} -- legacy. */
1134 legacy_name
= xstrprintf ("%s-packet", name
);
1135 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1136 &remote_set_cmdlist
);
1137 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1138 &remote_show_cmdlist
);
1142 static enum packet_result
1143 packet_check_result (const char *buf
)
1147 /* The stub recognized the packet request. Check that the
1148 operation succeeded. */
1150 && isxdigit (buf
[1]) && isxdigit (buf
[2])
1152 /* "Enn" - definitly an error. */
1153 return PACKET_ERROR
;
1155 /* Always treat "E." as an error. This will be used for
1156 more verbose error messages, such as E.memtypes. */
1157 if (buf
[0] == 'E' && buf
[1] == '.')
1158 return PACKET_ERROR
;
1160 /* The packet may or may not be OK. Just assume it is. */
1164 /* The stub does not support the packet. */
1165 return PACKET_UNKNOWN
;
1168 static enum packet_result
1169 packet_ok (const char *buf
, struct packet_config
*config
)
1171 enum packet_result result
;
1173 result
= packet_check_result (buf
);
1178 /* The stub recognized the packet request. */
1179 switch (config
->support
)
1181 case PACKET_SUPPORT_UNKNOWN
:
1183 fprintf_unfiltered (gdb_stdlog
,
1184 "Packet %s (%s) is supported\n",
1185 config
->name
, config
->title
);
1186 config
->support
= PACKET_ENABLE
;
1188 case PACKET_DISABLE
:
1189 internal_error (__FILE__
, __LINE__
,
1190 _("packet_ok: attempt to use a disabled packet"));
1196 case PACKET_UNKNOWN
:
1197 /* The stub does not support the packet. */
1198 switch (config
->support
)
1201 if (config
->detect
== AUTO_BOOLEAN_AUTO
)
1202 /* If the stub previously indicated that the packet was
1203 supported then there is a protocol error.. */
1204 error (_("Protocol error: %s (%s) conflicting enabled responses."),
1205 config
->name
, config
->title
);
1207 /* The user set it wrong. */
1208 error (_("Enabled packet %s (%s) not recognized by stub"),
1209 config
->name
, config
->title
);
1211 case PACKET_SUPPORT_UNKNOWN
:
1213 fprintf_unfiltered (gdb_stdlog
,
1214 "Packet %s (%s) is NOT supported\n",
1215 config
->name
, config
->title
);
1216 config
->support
= PACKET_DISABLE
;
1218 case PACKET_DISABLE
:
1240 PACKET_vFile_pwrite
,
1242 PACKET_vFile_unlink
,
1243 PACKET_vFile_readlink
,
1245 PACKET_qXfer_features
,
1246 PACKET_qXfer_libraries
,
1247 PACKET_qXfer_libraries_svr4
,
1248 PACKET_qXfer_memory_map
,
1249 PACKET_qXfer_spu_read
,
1250 PACKET_qXfer_spu_write
,
1251 PACKET_qXfer_osdata
,
1252 PACKET_qXfer_threads
,
1253 PACKET_qXfer_statictrace_read
,
1254 PACKET_qXfer_traceframe_info
,
1260 PACKET_QPassSignals
,
1261 PACKET_QProgramSignals
,
1262 PACKET_qSearch_memory
,
1265 PACKET_QStartNoAckMode
,
1267 PACKET_qXfer_siginfo_read
,
1268 PACKET_qXfer_siginfo_write
,
1270 PACKET_ConditionalTracepoints
,
1271 PACKET_ConditionalBreakpoints
,
1272 PACKET_BreakpointCommands
,
1273 PACKET_FastTracepoints
,
1274 PACKET_StaticTracepoints
,
1275 PACKET_InstallInTrace
,
1278 PACKET_TracepointSource
,
1281 PACKET_QDisableRandomization
,
1283 PACKET_QTBuffer_size
,
1286 PACKET_qXfer_btrace
,
1290 static struct packet_config remote_protocol_packets
[PACKET_MAX
];
1293 set_remote_protocol_packet_cmd (char *args
, int from_tty
,
1294 struct cmd_list_element
*c
)
1296 struct packet_config
*packet
;
1298 for (packet
= remote_protocol_packets
;
1299 packet
< &remote_protocol_packets
[PACKET_MAX
];
1302 if (&packet
->detect
== c
->var
)
1304 update_packet_config (packet
);
1308 internal_error (__FILE__
, __LINE__
, _("Could not find config for %s"),
1313 show_remote_protocol_packet_cmd (struct ui_file
*file
, int from_tty
,
1314 struct cmd_list_element
*c
,
1317 struct packet_config
*packet
;
1319 for (packet
= remote_protocol_packets
;
1320 packet
< &remote_protocol_packets
[PACKET_MAX
];
1323 if (&packet
->detect
== c
->var
)
1325 show_packet_config_cmd (packet
);
1329 internal_error (__FILE__
, __LINE__
, _("Could not find config for %s"),
1333 /* Should we try one of the 'Z' requests? */
1337 Z_PACKET_SOFTWARE_BP
,
1338 Z_PACKET_HARDWARE_BP
,
1345 /* For compatibility with older distributions. Provide a ``set remote
1346 Z-packet ...'' command that updates all the Z packet types. */
1348 static enum auto_boolean remote_Z_packet_detect
;
1351 set_remote_protocol_Z_packet_cmd (char *args
, int from_tty
,
1352 struct cmd_list_element
*c
)
1356 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1358 remote_protocol_packets
[PACKET_Z0
+ i
].detect
= remote_Z_packet_detect
;
1359 update_packet_config (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1364 show_remote_protocol_Z_packet_cmd (struct ui_file
*file
, int from_tty
,
1365 struct cmd_list_element
*c
,
1370 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1372 show_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1376 /* Should we try the 'ThreadInfo' query packet?
1378 This variable (NOT available to the user: auto-detect only!)
1379 determines whether GDB will use the new, simpler "ThreadInfo"
1380 query or the older, more complex syntax for thread queries.
1381 This is an auto-detect variable (set to true at each connect,
1382 and set to false when the target fails to recognize it). */
1384 static int use_threadinfo_query
;
1385 static int use_threadextra_query
;
1387 /* Tokens for use by the asynchronous signal handlers for SIGINT. */
1388 static struct async_signal_handler
*sigint_remote_twice_token
;
1389 static struct async_signal_handler
*sigint_remote_token
;
1392 /* Asynchronous signal handle registered as event loop source for
1393 when we have pending events ready to be passed to the core. */
1395 static struct async_event_handler
*remote_async_inferior_event_token
;
1399 static ptid_t magic_null_ptid
;
1400 static ptid_t not_sent_ptid
;
1401 static ptid_t any_thread_ptid
;
1403 /* These are the threads which we last sent to the remote system. The
1404 TID member will be -1 for all or -2 for not sent yet. */
1406 static ptid_t general_thread
;
1407 static ptid_t continue_thread
;
1409 /* This is the traceframe which we last selected on the remote system.
1410 It will be -1 if no traceframe is selected. */
1411 static int remote_traceframe_number
= -1;
1413 /* Find out if the stub attached to PID (and hence GDB should offer to
1414 detach instead of killing it when bailing out). */
1417 remote_query_attached (int pid
)
1419 struct remote_state
*rs
= get_remote_state ();
1420 size_t size
= get_remote_packet_size ();
1422 if (remote_protocol_packets
[PACKET_qAttached
].support
== PACKET_DISABLE
)
1425 if (remote_multi_process_p (rs
))
1426 xsnprintf (rs
->buf
, size
, "qAttached:%x", pid
);
1428 xsnprintf (rs
->buf
, size
, "qAttached");
1431 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1433 switch (packet_ok (rs
->buf
,
1434 &remote_protocol_packets
[PACKET_qAttached
]))
1437 if (strcmp (rs
->buf
, "1") == 0)
1441 warning (_("Remote failure reply: %s"), rs
->buf
);
1443 case PACKET_UNKNOWN
:
1450 /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID
1451 has been invented by GDB, instead of reported by the target. Since
1452 we can be connected to a remote system before before knowing about
1453 any inferior, mark the target with execution when we find the first
1454 inferior. If ATTACHED is 1, then we had just attached to this
1455 inferior. If it is 0, then we just created this inferior. If it
1456 is -1, then try querying the remote stub to find out if it had
1457 attached to the inferior or not. */
1459 static struct inferior
*
1460 remote_add_inferior (int fake_pid_p
, int pid
, int attached
)
1462 struct inferior
*inf
;
1464 /* Check whether this process we're learning about is to be
1465 considered attached, or if is to be considered to have been
1466 spawned by the stub. */
1468 attached
= remote_query_attached (pid
);
1470 if (gdbarch_has_global_solist (target_gdbarch ()))
1472 /* If the target shares code across all inferiors, then every
1473 attach adds a new inferior. */
1474 inf
= add_inferior (pid
);
1476 /* ... and every inferior is bound to the same program space.
1477 However, each inferior may still have its own address
1479 inf
->aspace
= maybe_new_address_space ();
1480 inf
->pspace
= current_program_space
;
1484 /* In the traditional debugging scenario, there's a 1-1 match
1485 between program/address spaces. We simply bind the inferior
1486 to the program space's address space. */
1487 inf
= current_inferior ();
1488 inferior_appeared (inf
, pid
);
1491 inf
->attach_flag
= attached
;
1492 inf
->fake_pid_p
= fake_pid_p
;
1497 /* Add thread PTID to GDB's thread list. Tag it as executing/running
1498 according to RUNNING. */
1501 remote_add_thread (ptid_t ptid
, int running
)
1505 set_executing (ptid
, running
);
1506 set_running (ptid
, running
);
1509 /* Come here when we learn about a thread id from the remote target.
1510 It may be the first time we hear about such thread, so take the
1511 opportunity to add it to GDB's thread list. In case this is the
1512 first time we're noticing its corresponding inferior, add it to
1513 GDB's inferior list as well. */
1516 remote_notice_new_inferior (ptid_t currthread
, int running
)
1518 /* If this is a new thread, add it to GDB's thread list.
1519 If we leave it up to WFI to do this, bad things will happen. */
1521 if (in_thread_list (currthread
) && is_exited (currthread
))
1523 /* We're seeing an event on a thread id we knew had exited.
1524 This has to be a new thread reusing the old id. Add it. */
1525 remote_add_thread (currthread
, running
);
1529 if (!in_thread_list (currthread
))
1531 struct inferior
*inf
= NULL
;
1532 int pid
= ptid_get_pid (currthread
);
1534 if (ptid_is_pid (inferior_ptid
)
1535 && pid
== ptid_get_pid (inferior_ptid
))
1537 /* inferior_ptid has no thread member yet. This can happen
1538 with the vAttach -> remote_wait,"TAAthread:" path if the
1539 stub doesn't support qC. This is the first stop reported
1540 after an attach, so this is the main thread. Update the
1541 ptid in the thread list. */
1542 if (in_thread_list (pid_to_ptid (pid
)))
1543 thread_change_ptid (inferior_ptid
, currthread
);
1546 remote_add_thread (currthread
, running
);
1547 inferior_ptid
= currthread
;
1552 if (ptid_equal (magic_null_ptid
, inferior_ptid
))
1554 /* inferior_ptid is not set yet. This can happen with the
1555 vRun -> remote_wait,"TAAthread:" path if the stub
1556 doesn't support qC. This is the first stop reported
1557 after an attach, so this is the main thread. Update the
1558 ptid in the thread list. */
1559 thread_change_ptid (inferior_ptid
, currthread
);
1563 /* When connecting to a target remote, or to a target
1564 extended-remote which already was debugging an inferior, we
1565 may not know about it yet. Add it before adding its child
1566 thread, so notifications are emitted in a sensible order. */
1567 if (!in_inferior_list (ptid_get_pid (currthread
)))
1569 struct remote_state
*rs
= get_remote_state ();
1570 int fake_pid_p
= !remote_multi_process_p (rs
);
1572 inf
= remote_add_inferior (fake_pid_p
,
1573 ptid_get_pid (currthread
), -1);
1576 /* This is really a new thread. Add it. */
1577 remote_add_thread (currthread
, running
);
1579 /* If we found a new inferior, let the common code do whatever
1580 it needs to with it (e.g., read shared libraries, insert
1583 notice_new_inferior (currthread
, running
, 0);
1587 /* Return the private thread data, creating it if necessary. */
1589 static struct private_thread_info
*
1590 demand_private_info (ptid_t ptid
)
1592 struct thread_info
*info
= find_thread_ptid (ptid
);
1598 info
->private = xmalloc (sizeof (*(info
->private)));
1599 info
->private_dtor
= free_private_thread_info
;
1600 info
->private->core
= -1;
1601 info
->private->extra
= 0;
1604 return info
->private;
1607 /* Call this function as a result of
1608 1) A halt indication (T packet) containing a thread id
1609 2) A direct query of currthread
1610 3) Successful execution of set thread */
1613 record_currthread (ptid_t currthread
)
1615 general_thread
= currthread
;
1618 static char *last_pass_packet
;
1620 /* If 'QPassSignals' is supported, tell the remote stub what signals
1621 it can simply pass through to the inferior without reporting. */
1624 remote_pass_signals (int numsigs
, unsigned char *pass_signals
)
1626 if (remote_protocol_packets
[PACKET_QPassSignals
].support
!= PACKET_DISABLE
)
1628 char *pass_packet
, *p
;
1631 gdb_assert (numsigs
< 256);
1632 for (i
= 0; i
< numsigs
; i
++)
1634 if (pass_signals
[i
])
1637 pass_packet
= xmalloc (count
* 3 + strlen ("QPassSignals:") + 1);
1638 strcpy (pass_packet
, "QPassSignals:");
1639 p
= pass_packet
+ strlen (pass_packet
);
1640 for (i
= 0; i
< numsigs
; i
++)
1642 if (pass_signals
[i
])
1645 *p
++ = tohex (i
>> 4);
1646 *p
++ = tohex (i
& 15);
1655 if (!last_pass_packet
|| strcmp (last_pass_packet
, pass_packet
))
1657 struct remote_state
*rs
= get_remote_state ();
1658 char *buf
= rs
->buf
;
1660 putpkt (pass_packet
);
1661 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1662 packet_ok (buf
, &remote_protocol_packets
[PACKET_QPassSignals
]);
1663 if (last_pass_packet
)
1664 xfree (last_pass_packet
);
1665 last_pass_packet
= pass_packet
;
1668 xfree (pass_packet
);
1672 /* The last QProgramSignals packet sent to the target. We bypass
1673 sending a new program signals list down to the target if the new
1674 packet is exactly the same as the last we sent. IOW, we only let
1675 the target know about program signals list changes. */
1677 static char *last_program_signals_packet
;
1679 /* If 'QProgramSignals' is supported, tell the remote stub what
1680 signals it should pass through to the inferior when detaching. */
1683 remote_program_signals (int numsigs
, unsigned char *signals
)
1685 if (remote_protocol_packets
[PACKET_QProgramSignals
].support
!= PACKET_DISABLE
)
1690 gdb_assert (numsigs
< 256);
1691 for (i
= 0; i
< numsigs
; i
++)
1696 packet
= xmalloc (count
* 3 + strlen ("QProgramSignals:") + 1);
1697 strcpy (packet
, "QProgramSignals:");
1698 p
= packet
+ strlen (packet
);
1699 for (i
= 0; i
< numsigs
; i
++)
1701 if (signal_pass_state (i
))
1704 *p
++ = tohex (i
>> 4);
1705 *p
++ = tohex (i
& 15);
1714 if (!last_program_signals_packet
1715 || strcmp (last_program_signals_packet
, packet
) != 0)
1717 struct remote_state
*rs
= get_remote_state ();
1718 char *buf
= rs
->buf
;
1721 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1722 packet_ok (buf
, &remote_protocol_packets
[PACKET_QProgramSignals
]);
1723 xfree (last_program_signals_packet
);
1724 last_program_signals_packet
= packet
;
1731 /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is
1732 MINUS_ONE_PTID, set the thread to -1, so the stub returns the
1733 thread. If GEN is set, set the general thread, if not, then set
1734 the step/continue thread. */
1736 set_thread (struct ptid ptid
, int gen
)
1738 struct remote_state
*rs
= get_remote_state ();
1739 ptid_t state
= gen
? general_thread
: continue_thread
;
1740 char *buf
= rs
->buf
;
1741 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
1743 if (ptid_equal (state
, ptid
))
1747 *buf
++ = gen
? 'g' : 'c';
1748 if (ptid_equal (ptid
, magic_null_ptid
))
1749 xsnprintf (buf
, endbuf
- buf
, "0");
1750 else if (ptid_equal (ptid
, any_thread_ptid
))
1751 xsnprintf (buf
, endbuf
- buf
, "0");
1752 else if (ptid_equal (ptid
, minus_one_ptid
))
1753 xsnprintf (buf
, endbuf
- buf
, "-1");
1755 write_ptid (buf
, endbuf
, ptid
);
1757 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1759 general_thread
= ptid
;
1761 continue_thread
= ptid
;
1765 set_general_thread (struct ptid ptid
)
1767 set_thread (ptid
, 1);
1771 set_continue_thread (struct ptid ptid
)
1773 set_thread (ptid
, 0);
1776 /* Change the remote current process. Which thread within the process
1777 ends up selected isn't important, as long as it is the same process
1778 as what INFERIOR_PTID points to.
1780 This comes from that fact that there is no explicit notion of
1781 "selected process" in the protocol. The selected process for
1782 general operations is the process the selected general thread
1786 set_general_process (void)
1788 struct remote_state
*rs
= get_remote_state ();
1790 /* If the remote can't handle multiple processes, don't bother. */
1791 if (!rs
->extended
|| !remote_multi_process_p (rs
))
1794 /* We only need to change the remote current thread if it's pointing
1795 at some other process. */
1796 if (ptid_get_pid (general_thread
) != ptid_get_pid (inferior_ptid
))
1797 set_general_thread (inferior_ptid
);
1801 /* Return nonzero if the thread PTID is still alive on the remote
1805 remote_thread_alive (struct target_ops
*ops
, ptid_t ptid
)
1807 struct remote_state
*rs
= get_remote_state ();
1810 if (ptid_equal (ptid
, magic_null_ptid
))
1811 /* The main thread is always alive. */
1814 if (ptid_get_pid (ptid
) != 0 && ptid_get_tid (ptid
) == 0)
1815 /* The main thread is always alive. This can happen after a
1816 vAttach, if the remote side doesn't support
1821 endp
= rs
->buf
+ get_remote_packet_size ();
1824 write_ptid (p
, endp
, ptid
);
1827 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1828 return (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K');
1831 /* About these extended threadlist and threadinfo packets. They are
1832 variable length packets but, the fields within them are often fixed
1833 length. They are redundent enough to send over UDP as is the
1834 remote protocol in general. There is a matching unit test module
1837 #define OPAQUETHREADBYTES 8
1839 /* a 64 bit opaque identifier */
1840 typedef unsigned char threadref
[OPAQUETHREADBYTES
];
1842 /* WARNING: This threadref data structure comes from the remote O.S.,
1843 libstub protocol encoding, and remote.c. It is not particularly
1846 /* Right now, the internal structure is int. We want it to be bigger.
1847 Plan to fix this. */
1849 typedef int gdb_threadref
; /* Internal GDB thread reference. */
1851 /* gdb_ext_thread_info is an internal GDB data structure which is
1852 equivalent to the reply of the remote threadinfo packet. */
1854 struct gdb_ext_thread_info
1856 threadref threadid
; /* External form of thread reference. */
1857 int active
; /* Has state interesting to GDB?
1859 char display
[256]; /* Brief state display, name,
1860 blocked/suspended. */
1861 char shortname
[32]; /* To be used to name threads. */
1862 char more_display
[256]; /* Long info, statistics, queue depth,
1866 /* The volume of remote transfers can be limited by submitting
1867 a mask containing bits specifying the desired information.
1868 Use a union of these values as the 'selection' parameter to
1869 get_thread_info. FIXME: Make these TAG names more thread specific. */
1871 #define TAG_THREADID 1
1872 #define TAG_EXISTS 2
1873 #define TAG_DISPLAY 4
1874 #define TAG_THREADNAME 8
1875 #define TAG_MOREDISPLAY 16
1877 #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2)
1879 char *unpack_varlen_hex (char *buff
, ULONGEST
*result
);
1881 static char *unpack_nibble (char *buf
, int *val
);
1883 static char *pack_nibble (char *buf
, int nibble
);
1885 static char *pack_hex_byte (char *pkt
, int /* unsigned char */ byte
);
1887 static char *unpack_byte (char *buf
, int *value
);
1889 static char *pack_int (char *buf
, int value
);
1891 static char *unpack_int (char *buf
, int *value
);
1893 static char *unpack_string (char *src
, char *dest
, int length
);
1895 static char *pack_threadid (char *pkt
, threadref
*id
);
1897 static char *unpack_threadid (char *inbuf
, threadref
*id
);
1899 void int_to_threadref (threadref
*id
, int value
);
1901 static int threadref_to_int (threadref
*ref
);
1903 static void copy_threadref (threadref
*dest
, threadref
*src
);
1905 static int threadmatch (threadref
*dest
, threadref
*src
);
1907 static char *pack_threadinfo_request (char *pkt
, int mode
,
1910 static int remote_unpack_thread_info_response (char *pkt
,
1911 threadref
*expectedref
,
1912 struct gdb_ext_thread_info
1916 static int remote_get_threadinfo (threadref
*threadid
,
1917 int fieldset
, /*TAG mask */
1918 struct gdb_ext_thread_info
*info
);
1920 static char *pack_threadlist_request (char *pkt
, int startflag
,
1922 threadref
*nextthread
);
1924 static int parse_threadlist_response (char *pkt
,
1926 threadref
*original_echo
,
1927 threadref
*resultlist
,
1930 static int remote_get_threadlist (int startflag
,
1931 threadref
*nextthread
,
1935 threadref
*threadlist
);
1937 typedef int (*rmt_thread_action
) (threadref
*ref
, void *context
);
1939 static int remote_threadlist_iterator (rmt_thread_action stepfunction
,
1940 void *context
, int looplimit
);
1942 static int remote_newthread_step (threadref
*ref
, void *context
);
1945 /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the
1946 buffer we're allowed to write to. Returns
1947 BUF+CHARACTERS_WRITTEN. */
1950 write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
)
1953 struct remote_state
*rs
= get_remote_state ();
1955 if (remote_multi_process_p (rs
))
1957 pid
= ptid_get_pid (ptid
);
1959 buf
+= xsnprintf (buf
, endbuf
- buf
, "p-%x.", -pid
);
1961 buf
+= xsnprintf (buf
, endbuf
- buf
, "p%x.", pid
);
1963 tid
= ptid_get_tid (ptid
);
1965 buf
+= xsnprintf (buf
, endbuf
- buf
, "-%x", -tid
);
1967 buf
+= xsnprintf (buf
, endbuf
- buf
, "%x", tid
);
1972 /* Extract a PTID from BUF. If non-null, OBUF is set to the to one
1973 passed the last parsed char. Returns null_ptid on error. */
1976 read_ptid (char *buf
, char **obuf
)
1980 ULONGEST pid
= 0, tid
= 0;
1984 /* Multi-process ptid. */
1985 pp
= unpack_varlen_hex (p
+ 1, &pid
);
1987 error (_("invalid remote ptid: %s"), p
);
1990 pp
= unpack_varlen_hex (p
+ 1, &tid
);
1993 return ptid_build (pid
, 0, tid
);
1996 /* No multi-process. Just a tid. */
1997 pp
= unpack_varlen_hex (p
, &tid
);
1999 /* Since the stub is not sending a process id, then default to
2000 what's in inferior_ptid, unless it's null at this point. If so,
2001 then since there's no way to know the pid of the reported
2002 threads, use the magic number. */
2003 if (ptid_equal (inferior_ptid
, null_ptid
))
2004 pid
= ptid_get_pid (magic_null_ptid
);
2006 pid
= ptid_get_pid (inferior_ptid
);
2010 return ptid_build (pid
, 0, tid
);
2013 /* Encode 64 bits in 16 chars of hex. */
2015 static const char hexchars
[] = "0123456789abcdef";
2018 ishex (int ch
, int *val
)
2020 if ((ch
>= 'a') && (ch
<= 'f'))
2022 *val
= ch
- 'a' + 10;
2025 if ((ch
>= 'A') && (ch
<= 'F'))
2027 *val
= ch
- 'A' + 10;
2030 if ((ch
>= '0') && (ch
<= '9'))
2041 if (ch
>= 'a' && ch
<= 'f')
2042 return ch
- 'a' + 10;
2043 if (ch
>= '0' && ch
<= '9')
2045 if (ch
>= 'A' && ch
<= 'F')
2046 return ch
- 'A' + 10;
2051 stub_unpack_int (char *buff
, int fieldlength
)
2058 nibble
= stubhex (*buff
++);
2062 retval
= retval
<< 4;
2068 unpack_varlen_hex (char *buff
, /* packet to parse */
2072 ULONGEST retval
= 0;
2074 while (ishex (*buff
, &nibble
))
2077 retval
= retval
<< 4;
2078 retval
|= nibble
& 0x0f;
2085 unpack_nibble (char *buf
, int *val
)
2087 *val
= fromhex (*buf
++);
2092 pack_nibble (char *buf
, int nibble
)
2094 *buf
++ = hexchars
[(nibble
& 0x0f)];
2099 pack_hex_byte (char *pkt
, int byte
)
2101 *pkt
++ = hexchars
[(byte
>> 4) & 0xf];
2102 *pkt
++ = hexchars
[(byte
& 0xf)];
2107 unpack_byte (char *buf
, int *value
)
2109 *value
= stub_unpack_int (buf
, 2);
2114 pack_int (char *buf
, int value
)
2116 buf
= pack_hex_byte (buf
, (value
>> 24) & 0xff);
2117 buf
= pack_hex_byte (buf
, (value
>> 16) & 0xff);
2118 buf
= pack_hex_byte (buf
, (value
>> 8) & 0x0ff);
2119 buf
= pack_hex_byte (buf
, (value
& 0xff));
2124 unpack_int (char *buf
, int *value
)
2126 *value
= stub_unpack_int (buf
, 8);
2130 #if 0 /* Currently unused, uncomment when needed. */
2131 static char *pack_string (char *pkt
, char *string
);
2134 pack_string (char *pkt
, char *string
)
2139 len
= strlen (string
);
2141 len
= 200; /* Bigger than most GDB packets, junk??? */
2142 pkt
= pack_hex_byte (pkt
, len
);
2146 if ((ch
== '\0') || (ch
== '#'))
2147 ch
= '*'; /* Protect encapsulation. */
2152 #endif /* 0 (unused) */
2155 unpack_string (char *src
, char *dest
, int length
)
2164 pack_threadid (char *pkt
, threadref
*id
)
2167 unsigned char *altid
;
2169 altid
= (unsigned char *) id
;
2170 limit
= pkt
+ BUF_THREAD_ID_SIZE
;
2172 pkt
= pack_hex_byte (pkt
, *altid
++);
2178 unpack_threadid (char *inbuf
, threadref
*id
)
2181 char *limit
= inbuf
+ BUF_THREAD_ID_SIZE
;
2184 altref
= (char *) id
;
2186 while (inbuf
< limit
)
2188 x
= stubhex (*inbuf
++);
2189 y
= stubhex (*inbuf
++);
2190 *altref
++ = (x
<< 4) | y
;
2195 /* Externally, threadrefs are 64 bits but internally, they are still
2196 ints. This is due to a mismatch of specifications. We would like
2197 to use 64bit thread references internally. This is an adapter
2201 int_to_threadref (threadref
*id
, int value
)
2203 unsigned char *scan
;
2205 scan
= (unsigned char *) id
;
2211 *scan
++ = (value
>> 24) & 0xff;
2212 *scan
++ = (value
>> 16) & 0xff;
2213 *scan
++ = (value
>> 8) & 0xff;
2214 *scan
++ = (value
& 0xff);
2218 threadref_to_int (threadref
*ref
)
2221 unsigned char *scan
;
2227 value
= (value
<< 8) | ((*scan
++) & 0xff);
2232 copy_threadref (threadref
*dest
, threadref
*src
)
2235 unsigned char *csrc
, *cdest
;
2237 csrc
= (unsigned char *) src
;
2238 cdest
= (unsigned char *) dest
;
2245 threadmatch (threadref
*dest
, threadref
*src
)
2247 /* Things are broken right now, so just assume we got a match. */
2249 unsigned char *srcp
, *destp
;
2251 srcp
= (char *) src
;
2252 destp
= (char *) dest
;
2256 result
&= (*srcp
++ == *destp
++) ? 1 : 0;
2263 threadid:1, # always request threadid
2270 /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
2273 pack_threadinfo_request (char *pkt
, int mode
, threadref
*id
)
2275 *pkt
++ = 'q'; /* Info Query */
2276 *pkt
++ = 'P'; /* process or thread info */
2277 pkt
= pack_int (pkt
, mode
); /* mode */
2278 pkt
= pack_threadid (pkt
, id
); /* threadid */
2279 *pkt
= '\0'; /* terminate */
2283 /* These values tag the fields in a thread info response packet. */
2284 /* Tagging the fields allows us to request specific fields and to
2285 add more fields as time goes by. */
2287 #define TAG_THREADID 1 /* Echo the thread identifier. */
2288 #define TAG_EXISTS 2 /* Is this process defined enough to
2289 fetch registers and its stack? */
2290 #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
2291 #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */
2292 #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
2296 remote_unpack_thread_info_response (char *pkt
, threadref
*expectedref
,
2297 struct gdb_ext_thread_info
*info
)
2299 struct remote_state
*rs
= get_remote_state ();
2303 char *limit
= pkt
+ rs
->buf_size
; /* Plausible parsing limit. */
2306 /* info->threadid = 0; FIXME: implement zero_threadref. */
2308 info
->display
[0] = '\0';
2309 info
->shortname
[0] = '\0';
2310 info
->more_display
[0] = '\0';
2312 /* Assume the characters indicating the packet type have been
2314 pkt
= unpack_int (pkt
, &mask
); /* arg mask */
2315 pkt
= unpack_threadid (pkt
, &ref
);
2318 warning (_("Incomplete response to threadinfo request."));
2319 if (!threadmatch (&ref
, expectedref
))
2320 { /* This is an answer to a different request. */
2321 warning (_("ERROR RMT Thread info mismatch."));
2324 copy_threadref (&info
->threadid
, &ref
);
2326 /* Loop on tagged fields , try to bail if somthing goes wrong. */
2328 /* Packets are terminated with nulls. */
2329 while ((pkt
< limit
) && mask
&& *pkt
)
2331 pkt
= unpack_int (pkt
, &tag
); /* tag */
2332 pkt
= unpack_byte (pkt
, &length
); /* length */
2333 if (!(tag
& mask
)) /* Tags out of synch with mask. */
2335 warning (_("ERROR RMT: threadinfo tag mismatch."));
2339 if (tag
== TAG_THREADID
)
2343 warning (_("ERROR RMT: length of threadid is not 16."));
2347 pkt
= unpack_threadid (pkt
, &ref
);
2348 mask
= mask
& ~TAG_THREADID
;
2351 if (tag
== TAG_EXISTS
)
2353 info
->active
= stub_unpack_int (pkt
, length
);
2355 mask
= mask
& ~(TAG_EXISTS
);
2358 warning (_("ERROR RMT: 'exists' length too long."));
2364 if (tag
== TAG_THREADNAME
)
2366 pkt
= unpack_string (pkt
, &info
->shortname
[0], length
);
2367 mask
= mask
& ~TAG_THREADNAME
;
2370 if (tag
== TAG_DISPLAY
)
2372 pkt
= unpack_string (pkt
, &info
->display
[0], length
);
2373 mask
= mask
& ~TAG_DISPLAY
;
2376 if (tag
== TAG_MOREDISPLAY
)
2378 pkt
= unpack_string (pkt
, &info
->more_display
[0], length
);
2379 mask
= mask
& ~TAG_MOREDISPLAY
;
2382 warning (_("ERROR RMT: unknown thread info tag."));
2383 break; /* Not a tag we know about. */
2389 remote_get_threadinfo (threadref
*threadid
, int fieldset
, /* TAG mask */
2390 struct gdb_ext_thread_info
*info
)
2392 struct remote_state
*rs
= get_remote_state ();
2395 pack_threadinfo_request (rs
->buf
, fieldset
, threadid
);
2397 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2399 if (rs
->buf
[0] == '\0')
2402 result
= remote_unpack_thread_info_response (rs
->buf
+ 2,
2407 /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
2410 pack_threadlist_request (char *pkt
, int startflag
, int threadcount
,
2411 threadref
*nextthread
)
2413 *pkt
++ = 'q'; /* info query packet */
2414 *pkt
++ = 'L'; /* Process LIST or threadLIST request */
2415 pkt
= pack_nibble (pkt
, startflag
); /* initflag 1 bytes */
2416 pkt
= pack_hex_byte (pkt
, threadcount
); /* threadcount 2 bytes */
2417 pkt
= pack_threadid (pkt
, nextthread
); /* 64 bit thread identifier */
2422 /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
2425 parse_threadlist_response (char *pkt
, int result_limit
,
2426 threadref
*original_echo
, threadref
*resultlist
,
2429 struct remote_state
*rs
= get_remote_state ();
2431 int count
, resultcount
, done
;
2434 /* Assume the 'q' and 'M chars have been stripped. */
2435 limit
= pkt
+ (rs
->buf_size
- BUF_THREAD_ID_SIZE
);
2436 /* done parse past here */
2437 pkt
= unpack_byte (pkt
, &count
); /* count field */
2438 pkt
= unpack_nibble (pkt
, &done
);
2439 /* The first threadid is the argument threadid. */
2440 pkt
= unpack_threadid (pkt
, original_echo
); /* should match query packet */
2441 while ((count
-- > 0) && (pkt
< limit
))
2443 pkt
= unpack_threadid (pkt
, resultlist
++);
2444 if (resultcount
++ >= result_limit
)
2453 remote_get_threadlist (int startflag
, threadref
*nextthread
, int result_limit
,
2454 int *done
, int *result_count
, threadref
*threadlist
)
2456 struct remote_state
*rs
= get_remote_state ();
2457 static threadref echo_nextthread
;
2460 /* Trancate result limit to be smaller than the packet size. */
2461 if ((((result_limit
+ 1) * BUF_THREAD_ID_SIZE
) + 10)
2462 >= get_remote_packet_size ())
2463 result_limit
= (get_remote_packet_size () / BUF_THREAD_ID_SIZE
) - 2;
2465 pack_threadlist_request (rs
->buf
, startflag
, result_limit
, nextthread
);
2467 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2469 if (*rs
->buf
== '\0')
2473 parse_threadlist_response (rs
->buf
+ 2, result_limit
, &echo_nextthread
,
2476 if (!threadmatch (&echo_nextthread
, nextthread
))
2478 /* FIXME: This is a good reason to drop the packet. */
2479 /* Possably, there is a duplicate response. */
2481 retransmit immediatly - race conditions
2482 retransmit after timeout - yes
2484 wait for packet, then exit
2486 warning (_("HMM: threadlist did not echo arg thread, dropping it."));
2487 return 0; /* I choose simply exiting. */
2489 if (*result_count
<= 0)
2493 warning (_("RMT ERROR : failed to get remote thread list."));
2496 return result
; /* break; */
2498 if (*result_count
> result_limit
)
2501 warning (_("RMT ERROR: threadlist response longer than requested."));
2507 /* This is the interface between remote and threads, remotes upper
2510 /* remote_find_new_threads retrieves the thread list and for each
2511 thread in the list, looks up the thread in GDB's internal list,
2512 adding the thread if it does not already exist. This involves
2513 getting partial thread lists from the remote target so, polling the
2514 quit_flag is required. */
2517 /* About this many threadisds fit in a packet. */
2519 #define MAXTHREADLISTRESULTS 32
2522 remote_threadlist_iterator (rmt_thread_action stepfunction
, void *context
,
2525 int done
, i
, result_count
;
2529 static threadref nextthread
;
2530 static threadref resultthreadlist
[MAXTHREADLISTRESULTS
];
2535 if (loopcount
++ > looplimit
)
2538 warning (_("Remote fetch threadlist -infinite loop-."));
2541 if (!remote_get_threadlist (startflag
, &nextthread
, MAXTHREADLISTRESULTS
,
2542 &done
, &result_count
, resultthreadlist
))
2547 /* Clear for later iterations. */
2549 /* Setup to resume next batch of thread references, set nextthread. */
2550 if (result_count
>= 1)
2551 copy_threadref (&nextthread
, &resultthreadlist
[result_count
- 1]);
2553 while (result_count
--)
2554 if (!(result
= (*stepfunction
) (&resultthreadlist
[i
++], context
)))
2561 remote_newthread_step (threadref
*ref
, void *context
)
2563 int pid
= ptid_get_pid (inferior_ptid
);
2564 ptid_t ptid
= ptid_build (pid
, 0, threadref_to_int (ref
));
2566 if (!in_thread_list (ptid
))
2568 return 1; /* continue iterator */
2571 #define CRAZY_MAX_THREADS 1000
2574 remote_current_thread (ptid_t oldpid
)
2576 struct remote_state
*rs
= get_remote_state ();
2579 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2580 if (rs
->buf
[0] == 'Q' && rs
->buf
[1] == 'C')
2581 return read_ptid (&rs
->buf
[2], NULL
);
2586 /* Find new threads for info threads command.
2587 * Original version, using John Metzler's thread protocol.
2591 remote_find_new_threads (void)
2593 remote_threadlist_iterator (remote_newthread_step
, 0,
2597 #if defined(HAVE_LIBEXPAT)
2599 typedef struct thread_item
2605 DEF_VEC_O(thread_item_t
);
2607 struct threads_parsing_context
2609 VEC (thread_item_t
) *items
;
2613 start_thread (struct gdb_xml_parser
*parser
,
2614 const struct gdb_xml_element
*element
,
2615 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
2617 struct threads_parsing_context
*data
= user_data
;
2619 struct thread_item item
;
2621 struct gdb_xml_value
*attr
;
2623 id
= xml_find_attribute (attributes
, "id")->value
;
2624 item
.ptid
= read_ptid (id
, NULL
);
2626 attr
= xml_find_attribute (attributes
, "core");
2628 item
.core
= *(ULONGEST
*) attr
->value
;
2634 VEC_safe_push (thread_item_t
, data
->items
, &item
);
2638 end_thread (struct gdb_xml_parser
*parser
,
2639 const struct gdb_xml_element
*element
,
2640 void *user_data
, const char *body_text
)
2642 struct threads_parsing_context
*data
= user_data
;
2644 if (body_text
&& *body_text
)
2645 VEC_last (thread_item_t
, data
->items
)->extra
= xstrdup (body_text
);
2648 const struct gdb_xml_attribute thread_attributes
[] = {
2649 { "id", GDB_XML_AF_NONE
, NULL
, NULL
},
2650 { "core", GDB_XML_AF_OPTIONAL
, gdb_xml_parse_attr_ulongest
, NULL
},
2651 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
2654 const struct gdb_xml_element thread_children
[] = {
2655 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2658 const struct gdb_xml_element threads_children
[] = {
2659 { "thread", thread_attributes
, thread_children
,
2660 GDB_XML_EF_REPEATABLE
| GDB_XML_EF_OPTIONAL
,
2661 start_thread
, end_thread
},
2662 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2665 const struct gdb_xml_element threads_elements
[] = {
2666 { "threads", NULL
, threads_children
,
2667 GDB_XML_EF_NONE
, NULL
, NULL
},
2668 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2671 /* Discard the contents of the constructed thread info context. */
2674 clear_threads_parsing_context (void *p
)
2676 struct threads_parsing_context
*context
= p
;
2678 struct thread_item
*item
;
2680 for (i
= 0; VEC_iterate (thread_item_t
, context
->items
, i
, item
); ++i
)
2681 xfree (item
->extra
);
2683 VEC_free (thread_item_t
, context
->items
);
2689 * Find all threads for info threads command.
2690 * Uses new thread protocol contributed by Cisco.
2691 * Falls back and attempts to use the older method (above)
2692 * if the target doesn't respond to the new method.
2696 remote_threads_info (struct target_ops
*ops
)
2698 struct remote_state
*rs
= get_remote_state ();
2702 if (remote_desc
== 0) /* paranoia */
2703 error (_("Command can only be used when connected to the remote target."));
2705 #if defined(HAVE_LIBEXPAT)
2706 if (remote_protocol_packets
[PACKET_qXfer_threads
].support
== PACKET_ENABLE
)
2708 char *xml
= target_read_stralloc (¤t_target
,
2709 TARGET_OBJECT_THREADS
, NULL
);
2711 struct cleanup
*back_to
= make_cleanup (xfree
, xml
);
2715 struct threads_parsing_context context
;
2717 context
.items
= NULL
;
2718 make_cleanup (clear_threads_parsing_context
, &context
);
2720 if (gdb_xml_parse_quick (_("threads"), "threads.dtd",
2721 threads_elements
, xml
, &context
) == 0)
2724 struct thread_item
*item
;
2727 VEC_iterate (thread_item_t
, context
.items
, i
, item
);
2730 if (!ptid_equal (item
->ptid
, null_ptid
))
2732 struct private_thread_info
*info
;
2733 /* In non-stop mode, we assume new found threads
2734 are running until proven otherwise with a
2735 stop reply. In all-stop, we can only get
2736 here if all threads are stopped. */
2737 int running
= non_stop
? 1 : 0;
2739 remote_notice_new_inferior (item
->ptid
, running
);
2741 info
= demand_private_info (item
->ptid
);
2742 info
->core
= item
->core
;
2743 info
->extra
= item
->extra
;
2750 do_cleanups (back_to
);
2755 if (use_threadinfo_query
)
2757 putpkt ("qfThreadInfo");
2758 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2760 if (bufp
[0] != '\0') /* q packet recognized */
2762 struct cleanup
*old_chain
;
2765 /* remote_notice_new_inferior (in the loop below) may make
2766 new RSP calls, which clobber rs->buf. Work with a
2768 bufp
= saved_reply
= xstrdup (rs
->buf
);
2769 old_chain
= make_cleanup (free_current_contents
, &saved_reply
);
2771 while (*bufp
++ == 'm') /* reply contains one or more TID */
2775 new_thread
= read_ptid (bufp
, &bufp
);
2776 if (!ptid_equal (new_thread
, null_ptid
))
2778 /* In non-stop mode, we assume new found threads
2779 are running until proven otherwise with a
2780 stop reply. In all-stop, we can only get
2781 here if all threads are stopped. */
2782 int running
= non_stop
? 1 : 0;
2784 remote_notice_new_inferior (new_thread
, running
);
2787 while (*bufp
++ == ','); /* comma-separated list */
2788 free_current_contents (&saved_reply
);
2789 putpkt ("qsThreadInfo");
2790 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2791 bufp
= saved_reply
= xstrdup (rs
->buf
);
2793 do_cleanups (old_chain
);
2798 /* Only qfThreadInfo is supported in non-stop mode. */
2802 /* Else fall back to old method based on jmetzler protocol. */
2803 use_threadinfo_query
= 0;
2804 remote_find_new_threads ();
2809 * Collect a descriptive string about the given thread.
2810 * The target may say anything it wants to about the thread
2811 * (typically info about its blocked / runnable state, name, etc.).
2812 * This string will appear in the info threads display.
2814 * Optional: targets are not required to implement this function.
2818 remote_threads_extra_info (struct thread_info
*tp
)
2820 struct remote_state
*rs
= get_remote_state ();
2824 struct gdb_ext_thread_info threadinfo
;
2825 static char display_buf
[100]; /* arbitrary... */
2826 int n
= 0; /* position in display_buf */
2828 if (remote_desc
== 0) /* paranoia */
2829 internal_error (__FILE__
, __LINE__
,
2830 _("remote_threads_extra_info"));
2832 if (ptid_equal (tp
->ptid
, magic_null_ptid
)
2833 || (ptid_get_pid (tp
->ptid
) != 0 && ptid_get_tid (tp
->ptid
) == 0))
2834 /* This is the main thread which was added by GDB. The remote
2835 server doesn't know about it. */
2838 if (remote_protocol_packets
[PACKET_qXfer_threads
].support
== PACKET_ENABLE
)
2840 struct thread_info
*info
= find_thread_ptid (tp
->ptid
);
2842 if (info
&& info
->private)
2843 return info
->private->extra
;
2848 if (use_threadextra_query
)
2851 char *endb
= rs
->buf
+ get_remote_packet_size ();
2853 xsnprintf (b
, endb
- b
, "qThreadExtraInfo,");
2855 write_ptid (b
, endb
, tp
->ptid
);
2858 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2859 if (rs
->buf
[0] != 0)
2861 n
= min (strlen (rs
->buf
) / 2, sizeof (display_buf
));
2862 result
= hex2bin (rs
->buf
, (gdb_byte
*) display_buf
, n
);
2863 display_buf
[result
] = '\0';
2868 /* If the above query fails, fall back to the old method. */
2869 use_threadextra_query
= 0;
2870 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
2871 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
2872 int_to_threadref (&id
, ptid_get_tid (tp
->ptid
));
2873 if (remote_get_threadinfo (&id
, set
, &threadinfo
))
2874 if (threadinfo
.active
)
2876 if (*threadinfo
.shortname
)
2877 n
+= xsnprintf (&display_buf
[0], sizeof (display_buf
) - n
,
2878 " Name: %s,", threadinfo
.shortname
);
2879 if (*threadinfo
.display
)
2880 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2881 " State: %s,", threadinfo
.display
);
2882 if (*threadinfo
.more_display
)
2883 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2884 " Priority: %s", threadinfo
.more_display
);
2888 /* For purely cosmetic reasons, clear up trailing commas. */
2889 if (',' == display_buf
[n
-1])
2890 display_buf
[n
-1] = ' ';
2899 remote_static_tracepoint_marker_at (CORE_ADDR addr
,
2900 struct static_tracepoint_marker
*marker
)
2902 struct remote_state
*rs
= get_remote_state ();
2905 xsnprintf (p
, get_remote_packet_size (), "qTSTMat:");
2907 p
+= hexnumstr (p
, addr
);
2909 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2913 error (_("Remote failure reply: %s"), p
);
2917 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
2924 static VEC(static_tracepoint_marker_p
) *
2925 remote_static_tracepoint_markers_by_strid (const char *strid
)
2927 struct remote_state
*rs
= get_remote_state ();
2928 VEC(static_tracepoint_marker_p
) *markers
= NULL
;
2929 struct static_tracepoint_marker
*marker
= NULL
;
2930 struct cleanup
*old_chain
;
2933 /* Ask for a first packet of static tracepoint marker
2936 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2939 error (_("Remote failure reply: %s"), p
);
2941 old_chain
= make_cleanup (free_current_marker
, &marker
);
2946 marker
= XCNEW (struct static_tracepoint_marker
);
2950 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
2952 if (strid
== NULL
|| strcmp (strid
, marker
->str_id
) == 0)
2954 VEC_safe_push (static_tracepoint_marker_p
,
2960 release_static_tracepoint_marker (marker
);
2961 memset (marker
, 0, sizeof (*marker
));
2964 while (*p
++ == ','); /* comma-separated list */
2965 /* Ask for another packet of static tracepoint definition. */
2967 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2971 do_cleanups (old_chain
);
2976 /* Implement the to_get_ada_task_ptid function for the remote targets. */
2979 remote_get_ada_task_ptid (long lwp
, long thread
)
2981 return ptid_build (ptid_get_pid (inferior_ptid
), 0, lwp
);
2985 /* Restart the remote side; this is an extended protocol operation. */
2988 extended_remote_restart (void)
2990 struct remote_state
*rs
= get_remote_state ();
2992 /* Send the restart command; for reasons I don't understand the
2993 remote side really expects a number after the "R". */
2994 xsnprintf (rs
->buf
, get_remote_packet_size (), "R%x", 0);
2997 remote_fileio_reset ();
3000 /* Clean up connection to a remote debugger. */
3005 if (remote_desc
== NULL
)
3006 return; /* already closed */
3008 /* Make sure we leave stdin registered in the event loop, and we
3009 don't leave the async SIGINT signal handler installed. */
3010 remote_terminal_ours ();
3012 serial_close (remote_desc
);
3015 /* We don't have a connection to the remote stub anymore. Get rid
3016 of all the inferiors and their threads we were controlling.
3017 Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame
3018 will be unable to find the thread corresponding to (pid, 0, 0). */
3019 inferior_ptid
= null_ptid
;
3020 discard_all_inferiors ();
3022 /* Stop replies may from inferiors which are still unknown to GDB.
3023 We are closing the remote target, so we should discard
3024 everything, including the stop replies from GDB-unknown
3026 discard_pending_stop_replies (NULL
);
3028 if (remote_async_inferior_event_token
)
3029 delete_async_event_handler (&remote_async_inferior_event_token
);
3031 remote_notif_unregister_async_event_handler ();
3034 /* Query the remote side for the text, data and bss offsets. */
3039 struct remote_state
*rs
= get_remote_state ();
3042 int lose
, num_segments
= 0, do_sections
, do_segments
;
3043 CORE_ADDR text_addr
, data_addr
, bss_addr
, segments
[2];
3044 struct section_offsets
*offs
;
3045 struct symfile_segment_data
*data
;
3047 if (symfile_objfile
== NULL
)
3050 putpkt ("qOffsets");
3051 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3054 if (buf
[0] == '\000')
3055 return; /* Return silently. Stub doesn't support
3059 warning (_("Remote failure reply: %s"), buf
);
3063 /* Pick up each field in turn. This used to be done with scanf, but
3064 scanf will make trouble if CORE_ADDR size doesn't match
3065 conversion directives correctly. The following code will work
3066 with any size of CORE_ADDR. */
3067 text_addr
= data_addr
= bss_addr
= 0;
3071 if (strncmp (ptr
, "Text=", 5) == 0)
3074 /* Don't use strtol, could lose on big values. */
3075 while (*ptr
&& *ptr
!= ';')
3076 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3078 if (strncmp (ptr
, ";Data=", 6) == 0)
3081 while (*ptr
&& *ptr
!= ';')
3082 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3087 if (!lose
&& strncmp (ptr
, ";Bss=", 5) == 0)
3090 while (*ptr
&& *ptr
!= ';')
3091 bss_addr
= (bss_addr
<< 4) + fromhex (*ptr
++);
3093 if (bss_addr
!= data_addr
)
3094 warning (_("Target reported unsupported offsets: %s"), buf
);
3099 else if (strncmp (ptr
, "TextSeg=", 8) == 0)
3102 /* Don't use strtol, could lose on big values. */
3103 while (*ptr
&& *ptr
!= ';')
3104 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3107 if (strncmp (ptr
, ";DataSeg=", 9) == 0)
3110 while (*ptr
&& *ptr
!= ';')
3111 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3119 error (_("Malformed response to offset query, %s"), buf
);
3120 else if (*ptr
!= '\0')
3121 warning (_("Target reported unsupported offsets: %s"), buf
);
3123 offs
= ((struct section_offsets
*)
3124 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
)));
3125 memcpy (offs
, symfile_objfile
->section_offsets
,
3126 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
3128 data
= get_symfile_segment_data (symfile_objfile
->obfd
);
3129 do_segments
= (data
!= NULL
);
3130 do_sections
= num_segments
== 0;
3132 if (num_segments
> 0)
3134 segments
[0] = text_addr
;
3135 segments
[1] = data_addr
;
3137 /* If we have two segments, we can still try to relocate everything
3138 by assuming that the .text and .data offsets apply to the whole
3139 text and data segments. Convert the offsets given in the packet
3140 to base addresses for symfile_map_offsets_to_segments. */
3141 else if (data
&& data
->num_segments
== 2)
3143 segments
[0] = data
->segment_bases
[0] + text_addr
;
3144 segments
[1] = data
->segment_bases
[1] + data_addr
;
3147 /* If the object file has only one segment, assume that it is text
3148 rather than data; main programs with no writable data are rare,
3149 but programs with no code are useless. Of course the code might
3150 have ended up in the data segment... to detect that we would need
3151 the permissions here. */
3152 else if (data
&& data
->num_segments
== 1)
3154 segments
[0] = data
->segment_bases
[0] + text_addr
;
3157 /* There's no way to relocate by segment. */
3163 int ret
= symfile_map_offsets_to_segments (symfile_objfile
->obfd
, data
,
3164 offs
, num_segments
, segments
);
3166 if (ret
== 0 && !do_sections
)
3167 error (_("Can not handle qOffsets TextSeg "
3168 "response with this symbol file"));
3175 free_symfile_segment_data (data
);
3179 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_addr
;
3181 /* This is a temporary kludge to force data and bss to use the
3182 same offsets because that's what nlmconv does now. The real
3183 solution requires changes to the stub and remote.c that I
3184 don't have time to do right now. */
3186 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_addr
;
3187 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = data_addr
;
3190 objfile_relocate (symfile_objfile
, offs
);
3193 /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in
3194 threads we know are stopped already. This is used during the
3195 initial remote connection in non-stop mode --- threads that are
3196 reported as already being stopped are left stopped. */
3199 set_stop_requested_callback (struct thread_info
*thread
, void *data
)
3201 /* If we have a stop reply for this thread, it must be stopped. */
3202 if (peek_stop_reply (thread
->ptid
))
3203 set_stop_requested (thread
->ptid
, 1);
3208 /* Send interrupt_sequence to remote target. */
3210 send_interrupt_sequence (void)
3212 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
3213 serial_write (remote_desc
, "\x03", 1);
3214 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
3215 serial_send_break (remote_desc
);
3216 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
3218 serial_send_break (remote_desc
);
3219 serial_write (remote_desc
, "g", 1);
3222 internal_error (__FILE__
, __LINE__
,
3223 _("Invalid value for interrupt_sequence_mode: %s."),
3224 interrupt_sequence_mode
);
3228 /* If STOP_REPLY is a T stop reply, look for the "thread" register,
3229 and extract the PTID. Returns NULL_PTID if not found. */
3232 stop_reply_extract_thread (char *stop_reply
)
3234 if (stop_reply
[0] == 'T' && strlen (stop_reply
) > 3)
3238 /* Txx r:val ; r:val (...) */
3241 /* Look for "register" named "thread". */
3246 p1
= strchr (p
, ':');
3250 if (strncmp (p
, "thread", p1
- p
) == 0)
3251 return read_ptid (++p1
, &p
);
3253 p1
= strchr (p
, ';');
3265 /* Query the remote target for which is the current thread/process,
3266 add it to our tables, and update INFERIOR_PTID. The caller is
3267 responsible for setting the state such that the remote end is ready
3268 to return the current thread.
3270 This function is called after handling the '?' or 'vRun' packets,
3271 whose response is a stop reply from which we can also try
3272 extracting the thread. If the target doesn't support the explicit
3273 qC query, we infer the current thread from that stop reply, passed
3274 in in WAIT_STATUS, which may be NULL. */
3277 add_current_inferior_and_thread (char *wait_status
)
3279 struct remote_state
*rs
= get_remote_state ();
3281 ptid_t ptid
= null_ptid
;
3283 inferior_ptid
= null_ptid
;
3285 /* Now, if we have thread information, update inferior_ptid. First
3286 if we have a stop reply handy, maybe it's a T stop reply with a
3287 "thread" register we can extract the current thread from. If
3288 not, ask the remote which is the current thread, with qC. The
3289 former method avoids a roundtrip. Note we don't use
3290 remote_parse_stop_reply as that makes use of the target
3291 architecture, which we haven't yet fully determined at this
3293 if (wait_status
!= NULL
)
3294 ptid
= stop_reply_extract_thread (wait_status
);
3295 if (ptid_equal (ptid
, null_ptid
))
3296 ptid
= remote_current_thread (inferior_ptid
);
3298 if (!ptid_equal (ptid
, null_ptid
))
3300 if (!remote_multi_process_p (rs
))
3303 inferior_ptid
= ptid
;
3307 /* Without this, some commands which require an active target
3308 (such as kill) won't work. This variable serves (at least)
3309 double duty as both the pid of the target process (if it has
3310 such), and as a flag indicating that a target is active. */
3311 inferior_ptid
= magic_null_ptid
;
3315 remote_add_inferior (fake_pid_p
, ptid_get_pid (inferior_ptid
), -1);
3317 /* Add the main thread. */
3318 add_thread_silent (inferior_ptid
);
3322 remote_start_remote (int from_tty
, struct target_ops
*target
, int extended_p
)
3324 struct remote_state
*rs
= get_remote_state ();
3325 struct packet_config
*noack_config
;
3326 char *wait_status
= NULL
;
3328 immediate_quit
++; /* Allow user to interrupt it. */
3331 if (interrupt_on_connect
)
3332 send_interrupt_sequence ();
3334 /* Ack any packet which the remote side has already sent. */
3335 serial_write (remote_desc
, "+", 1);
3337 /* Signal other parts that we're going through the initial setup,
3338 and so things may not be stable yet. */
3339 rs
->starting_up
= 1;
3341 /* The first packet we send to the target is the optional "supported
3342 packets" request. If the target can answer this, it will tell us
3343 which later probes to skip. */
3344 remote_query_supported ();
3346 /* If the stub wants to get a QAllow, compose one and send it. */
3347 if (remote_protocol_packets
[PACKET_QAllow
].support
!= PACKET_DISABLE
)
3348 remote_set_permissions ();
3350 /* Next, we possibly activate noack mode.
3352 If the QStartNoAckMode packet configuration is set to AUTO,
3353 enable noack mode if the stub reported a wish for it with
3356 If set to TRUE, then enable noack mode even if the stub didn't
3357 report it in qSupported. If the stub doesn't reply OK, the
3358 session ends with an error.
3360 If FALSE, then don't activate noack mode, regardless of what the
3361 stub claimed should be the default with qSupported. */
3363 noack_config
= &remote_protocol_packets
[PACKET_QStartNoAckMode
];
3365 if (noack_config
->detect
== AUTO_BOOLEAN_TRUE
3366 || (noack_config
->detect
== AUTO_BOOLEAN_AUTO
3367 && noack_config
->support
== PACKET_ENABLE
))
3369 putpkt ("QStartNoAckMode");
3370 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3371 if (packet_ok (rs
->buf
, noack_config
) == PACKET_OK
)
3377 /* Tell the remote that we are using the extended protocol. */
3379 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3382 /* Let the target know which signals it is allowed to pass down to
3384 update_signals_program_target ();
3386 /* Next, if the target can specify a description, read it. We do
3387 this before anything involving memory or registers. */
3388 target_find_description ();
3390 /* Next, now that we know something about the target, update the
3391 address spaces in the program spaces. */
3392 update_address_spaces ();
3394 /* On OSs where the list of libraries is global to all
3395 processes, we fetch them early. */
3396 if (gdbarch_has_global_solist (target_gdbarch ()))
3397 solib_add (NULL
, from_tty
, target
, auto_solib_add
);
3401 if (!rs
->non_stop_aware
)
3402 error (_("Non-stop mode requested, but remote "
3403 "does not support non-stop"));
3405 putpkt ("QNonStop:1");
3406 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3408 if (strcmp (rs
->buf
, "OK") != 0)
3409 error (_("Remote refused setting non-stop mode with: %s"), rs
->buf
);
3411 /* Find about threads and processes the stub is already
3412 controlling. We default to adding them in the running state.
3413 The '?' query below will then tell us about which threads are
3415 remote_threads_info (target
);
3417 else if (rs
->non_stop_aware
)
3419 /* Don't assume that the stub can operate in all-stop mode.
3420 Request it explicitly. */
3421 putpkt ("QNonStop:0");
3422 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3424 if (strcmp (rs
->buf
, "OK") != 0)
3425 error (_("Remote refused setting all-stop mode with: %s"), rs
->buf
);
3428 /* Check whether the target is running now. */
3430 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3436 struct inferior
*inf
;
3438 if (rs
->buf
[0] == 'W' || rs
->buf
[0] == 'X')
3441 error (_("The target is not running (try extended-remote?)"));
3443 /* We're connected, but not running. Drop out before we
3444 call start_remote. */
3445 rs
->starting_up
= 0;
3450 /* Save the reply for later. */
3451 wait_status
= alloca (strlen (rs
->buf
) + 1);
3452 strcpy (wait_status
, rs
->buf
);
3455 /* Let the stub know that we want it to return the thread. */
3456 set_continue_thread (minus_one_ptid
);
3458 add_current_inferior_and_thread (wait_status
);
3460 /* init_wait_for_inferior should be called before get_offsets in order
3461 to manage `inserted' flag in bp loc in a correct state.
3462 breakpoint_init_inferior, called from init_wait_for_inferior, set
3463 `inserted' flag to 0, while before breakpoint_re_set, called from
3464 start_remote, set `inserted' flag to 1. In the initialization of
3465 inferior, breakpoint_init_inferior should be called first, and then
3466 breakpoint_re_set can be called. If this order is broken, state of
3467 `inserted' flag is wrong, and cause some problems on breakpoint
3469 init_wait_for_inferior ();
3471 get_offsets (); /* Get text, data & bss offsets. */
3473 /* If we could not find a description using qXfer, and we know
3474 how to do it some other way, try again. This is not
3475 supported for non-stop; it could be, but it is tricky if
3476 there are no stopped threads when we connect. */
3477 if (remote_read_description_p (target
)
3478 && gdbarch_target_desc (target_gdbarch ()) == NULL
)
3480 target_clear_description ();
3481 target_find_description ();
3484 /* Use the previously fetched status. */
3485 gdb_assert (wait_status
!= NULL
);
3486 strcpy (rs
->buf
, wait_status
);
3487 rs
->cached_wait_status
= 1;
3490 start_remote (from_tty
); /* Initialize gdb process mechanisms. */
3494 /* Clear WFI global state. Do this before finding about new
3495 threads and inferiors, and setting the current inferior.
3496 Otherwise we would clear the proceed status of the current
3497 inferior when we want its stop_soon state to be preserved
3498 (see notice_new_inferior). */
3499 init_wait_for_inferior ();
3501 /* In non-stop, we will either get an "OK", meaning that there
3502 are no stopped threads at this time; or, a regular stop
3503 reply. In the latter case, there may be more than one thread
3504 stopped --- we pull them all out using the vStopped
3506 if (strcmp (rs
->buf
, "OK") != 0)
3508 struct notif_client
*notif
= ¬if_client_stop
;
3510 /* remote_notif_get_pending_replies acks this one, and gets
3512 notif_client_stop
.pending_event
3513 = remote_notif_parse (notif
, rs
->buf
);
3514 remote_notif_get_pending_events (notif
);
3516 /* Make sure that threads that were stopped remain
3518 iterate_over_threads (set_stop_requested_callback
, NULL
);
3521 if (target_can_async_p ())
3522 target_async (inferior_event_handler
, 0);
3524 if (thread_count () == 0)
3527 error (_("The target is not running (try extended-remote?)"));
3529 /* We're connected, but not running. Drop out before we
3530 call start_remote. */
3531 rs
->starting_up
= 0;
3535 /* Let the stub know that we want it to return the thread. */
3537 /* Force the stub to choose a thread. */
3538 set_general_thread (null_ptid
);
3541 inferior_ptid
= remote_current_thread (minus_one_ptid
);
3542 if (ptid_equal (inferior_ptid
, minus_one_ptid
))
3543 error (_("remote didn't report the current thread in non-stop mode"));
3545 get_offsets (); /* Get text, data & bss offsets. */
3547 /* In non-stop mode, any cached wait status will be stored in
3548 the stop reply queue. */
3549 gdb_assert (wait_status
== NULL
);
3551 /* Report all signals during attach/startup. */
3552 remote_pass_signals (0, NULL
);
3555 /* If we connected to a live target, do some additional setup. */
3556 if (target_has_execution
)
3558 if (exec_bfd
) /* No use without an exec file. */
3559 remote_check_symbols (symfile_objfile
);
3562 /* Possibly the target has been engaged in a trace run started
3563 previously; find out where things are at. */
3564 if (remote_get_trace_status (current_trace_status ()) != -1)
3566 struct uploaded_tp
*uploaded_tps
= NULL
;
3567 struct uploaded_tsv
*uploaded_tsvs
= NULL
;
3569 if (current_trace_status ()->running
)
3570 printf_filtered (_("Trace is already running on the target.\n"));
3572 /* Get trace state variables first, they may be checked when
3573 parsing uploaded commands. */
3575 remote_upload_trace_state_variables (&uploaded_tsvs
);
3577 merge_uploaded_trace_state_variables (&uploaded_tsvs
);
3579 remote_upload_tracepoints (&uploaded_tps
);
3581 merge_uploaded_tracepoints (&uploaded_tps
);
3584 /* The thread and inferior lists are now synchronized with the
3585 target, our symbols have been relocated, and we're merged the
3586 target's tracepoints with ours. We're done with basic start
3588 rs
->starting_up
= 0;
3590 /* If breakpoints are global, insert them now. */
3591 if (gdbarch_has_global_breakpoints (target_gdbarch ())
3592 && breakpoints_always_inserted_mode ())
3593 insert_breakpoints ();
3596 /* Open a connection to a remote debugger.
3597 NAME is the filename used for communication. */
3600 remote_open (char *name
, int from_tty
)
3602 remote_open_1 (name
, from_tty
, &remote_ops
, 0);
3605 /* Open a connection to a remote debugger using the extended
3606 remote gdb protocol. NAME is the filename used for communication. */
3609 extended_remote_open (char *name
, int from_tty
)
3611 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */);
3614 /* Generic code for opening a connection to a remote target. */
3617 init_all_packet_configs (void)
3621 for (i
= 0; i
< PACKET_MAX
; i
++)
3622 update_packet_config (&remote_protocol_packets
[i
]);
3625 /* Symbol look-up. */
3628 remote_check_symbols (struct objfile
*objfile
)
3630 struct remote_state
*rs
= get_remote_state ();
3631 char *msg
, *reply
, *tmp
;
3632 struct minimal_symbol
*sym
;
3635 /* The remote side has no concept of inferiors that aren't running
3636 yet, it only knows about running processes. If we're connected
3637 but our current inferior is not running, we should not invite the
3638 remote target to request symbol lookups related to its
3639 (unrelated) current process. */
3640 if (!target_has_execution
)
3643 if (remote_protocol_packets
[PACKET_qSymbol
].support
== PACKET_DISABLE
)
3646 /* Make sure the remote is pointing at the right process. Note
3647 there's no way to select "no process". */
3648 set_general_process ();
3650 /* Allocate a message buffer. We can't reuse the input buffer in RS,
3651 because we need both at the same time. */
3652 msg
= alloca (get_remote_packet_size ());
3654 /* Invite target to request symbol lookups. */
3656 putpkt ("qSymbol::");
3657 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3658 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSymbol
]);
3661 while (strncmp (reply
, "qSymbol:", 8) == 0)
3664 end
= hex2bin (tmp
, (gdb_byte
*) msg
, strlen (tmp
) / 2);
3666 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
3668 xsnprintf (msg
, get_remote_packet_size (), "qSymbol::%s", &reply
[8]);
3671 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
3672 CORE_ADDR sym_addr
= SYMBOL_VALUE_ADDRESS (sym
);
3674 /* If this is a function address, return the start of code
3675 instead of any data function descriptor. */
3676 sym_addr
= gdbarch_convert_from_func_ptr_addr (target_gdbarch (),
3680 xsnprintf (msg
, get_remote_packet_size (), "qSymbol:%s:%s",
3681 phex_nz (sym_addr
, addr_size
), &reply
[8]);
3685 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3690 static struct serial
*
3691 remote_serial_open (char *name
)
3693 static int udp_warning
= 0;
3695 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
3696 of in ser-tcp.c, because it is the remote protocol assuming that the
3697 serial connection is reliable and not the serial connection promising
3699 if (!udp_warning
&& strncmp (name
, "udp:", 4) == 0)
3701 warning (_("The remote protocol may be unreliable over UDP.\n"
3702 "Some events may be lost, rendering further debugging "
3707 return serial_open (name
);
3710 /* Inform the target of our permission settings. The permission flags
3711 work without this, but if the target knows the settings, it can do
3712 a couple things. First, it can add its own check, to catch cases
3713 that somehow manage to get by the permissions checks in target
3714 methods. Second, if the target is wired to disallow particular
3715 settings (for instance, a system in the field that is not set up to
3716 be able to stop at a breakpoint), it can object to any unavailable
3720 remote_set_permissions (void)
3722 struct remote_state
*rs
= get_remote_state ();
3724 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAllow:"
3725 "WriteReg:%x;WriteMem:%x;"
3726 "InsertBreak:%x;InsertTrace:%x;"
3727 "InsertFastTrace:%x;Stop:%x",
3728 may_write_registers
, may_write_memory
,
3729 may_insert_breakpoints
, may_insert_tracepoints
,
3730 may_insert_fast_tracepoints
, may_stop
);
3732 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3734 /* If the target didn't like the packet, warn the user. Do not try
3735 to undo the user's settings, that would just be maddening. */
3736 if (strcmp (rs
->buf
, "OK") != 0)
3737 warning (_("Remote refused setting permissions with: %s"), rs
->buf
);
3740 /* This type describes each known response to the qSupported
3742 struct protocol_feature
3744 /* The name of this protocol feature. */
3747 /* The default for this protocol feature. */
3748 enum packet_support default_support
;
3750 /* The function to call when this feature is reported, or after
3751 qSupported processing if the feature is not supported.
3752 The first argument points to this structure. The second
3753 argument indicates whether the packet requested support be
3754 enabled, disabled, or probed (or the default, if this function
3755 is being called at the end of processing and this feature was
3756 not reported). The third argument may be NULL; if not NULL, it
3757 is a NUL-terminated string taken from the packet following
3758 this feature's name and an equals sign. */
3759 void (*func
) (const struct protocol_feature
*, enum packet_support
,
3762 /* The corresponding packet for this feature. Only used if
3763 FUNC is remote_supported_packet. */
3768 remote_supported_packet (const struct protocol_feature
*feature
,
3769 enum packet_support support
,
3770 const char *argument
)
3774 warning (_("Remote qSupported response supplied an unexpected value for"
3775 " \"%s\"."), feature
->name
);
3779 if (remote_protocol_packets
[feature
->packet
].support
3780 == PACKET_SUPPORT_UNKNOWN
)
3781 remote_protocol_packets
[feature
->packet
].support
= support
;
3785 remote_packet_size (const struct protocol_feature
*feature
,
3786 enum packet_support support
, const char *value
)
3788 struct remote_state
*rs
= get_remote_state ();
3793 if (support
!= PACKET_ENABLE
)
3796 if (value
== NULL
|| *value
== '\0')
3798 warning (_("Remote target reported \"%s\" without a size."),
3804 packet_size
= strtol (value
, &value_end
, 16);
3805 if (errno
!= 0 || *value_end
!= '\0' || packet_size
< 0)
3807 warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."),
3808 feature
->name
, value
);
3812 if (packet_size
> MAX_REMOTE_PACKET_SIZE
)
3814 warning (_("limiting remote suggested packet size (%d bytes) to %d"),
3815 packet_size
, MAX_REMOTE_PACKET_SIZE
);
3816 packet_size
= MAX_REMOTE_PACKET_SIZE
;
3819 /* Record the new maximum packet size. */
3820 rs
->explicit_packet_size
= packet_size
;
3824 remote_multi_process_feature (const struct protocol_feature
*feature
,
3825 enum packet_support support
, const char *value
)
3827 struct remote_state
*rs
= get_remote_state ();
3829 rs
->multi_process_aware
= (support
== PACKET_ENABLE
);
3833 remote_non_stop_feature (const struct protocol_feature
*feature
,
3834 enum packet_support support
, const char *value
)
3836 struct remote_state
*rs
= get_remote_state ();
3838 rs
->non_stop_aware
= (support
== PACKET_ENABLE
);
3842 remote_cond_tracepoint_feature (const struct protocol_feature
*feature
,
3843 enum packet_support support
,
3846 struct remote_state
*rs
= get_remote_state ();
3848 rs
->cond_tracepoints
= (support
== PACKET_ENABLE
);
3852 remote_cond_breakpoint_feature (const struct protocol_feature
*feature
,
3853 enum packet_support support
,
3856 struct remote_state
*rs
= get_remote_state ();
3858 rs
->cond_breakpoints
= (support
== PACKET_ENABLE
);
3862 remote_breakpoint_commands_feature (const struct protocol_feature
*feature
,
3863 enum packet_support support
,
3866 struct remote_state
*rs
= get_remote_state ();
3868 rs
->breakpoint_commands
= (support
== PACKET_ENABLE
);
3872 remote_fast_tracepoint_feature (const struct protocol_feature
*feature
,
3873 enum packet_support support
,
3876 struct remote_state
*rs
= get_remote_state ();
3878 rs
->fast_tracepoints
= (support
== PACKET_ENABLE
);
3882 remote_static_tracepoint_feature (const struct protocol_feature
*feature
,
3883 enum packet_support support
,
3886 struct remote_state
*rs
= get_remote_state ();
3888 rs
->static_tracepoints
= (support
== PACKET_ENABLE
);
3892 remote_install_in_trace_feature (const struct protocol_feature
*feature
,
3893 enum packet_support support
,
3896 struct remote_state
*rs
= get_remote_state ();
3898 rs
->install_in_trace
= (support
== PACKET_ENABLE
);
3902 remote_disconnected_tracing_feature (const struct protocol_feature
*feature
,
3903 enum packet_support support
,
3906 struct remote_state
*rs
= get_remote_state ();
3908 rs
->disconnected_tracing
= (support
== PACKET_ENABLE
);
3912 remote_enable_disable_tracepoint_feature (const struct protocol_feature
*feature
,
3913 enum packet_support support
,
3916 struct remote_state
*rs
= get_remote_state ();
3918 rs
->enable_disable_tracepoints
= (support
== PACKET_ENABLE
);
3922 remote_string_tracing_feature (const struct protocol_feature
*feature
,
3923 enum packet_support support
,
3926 struct remote_state
*rs
= get_remote_state ();
3928 rs
->string_tracing
= (support
== PACKET_ENABLE
);
3931 static struct protocol_feature remote_protocol_features
[] = {
3932 { "PacketSize", PACKET_DISABLE
, remote_packet_size
, -1 },
3933 { "qXfer:auxv:read", PACKET_DISABLE
, remote_supported_packet
,
3934 PACKET_qXfer_auxv
},
3935 { "qXfer:features:read", PACKET_DISABLE
, remote_supported_packet
,
3936 PACKET_qXfer_features
},
3937 { "qXfer:libraries:read", PACKET_DISABLE
, remote_supported_packet
,
3938 PACKET_qXfer_libraries
},
3939 { "qXfer:libraries-svr4:read", PACKET_DISABLE
, remote_supported_packet
,
3940 PACKET_qXfer_libraries_svr4
},
3941 { "qXfer:memory-map:read", PACKET_DISABLE
, remote_supported_packet
,
3942 PACKET_qXfer_memory_map
},
3943 { "qXfer:spu:read", PACKET_DISABLE
, remote_supported_packet
,
3944 PACKET_qXfer_spu_read
},
3945 { "qXfer:spu:write", PACKET_DISABLE
, remote_supported_packet
,
3946 PACKET_qXfer_spu_write
},
3947 { "qXfer:osdata:read", PACKET_DISABLE
, remote_supported_packet
,
3948 PACKET_qXfer_osdata
},
3949 { "qXfer:threads:read", PACKET_DISABLE
, remote_supported_packet
,
3950 PACKET_qXfer_threads
},
3951 { "qXfer:traceframe-info:read", PACKET_DISABLE
, remote_supported_packet
,
3952 PACKET_qXfer_traceframe_info
},
3953 { "QPassSignals", PACKET_DISABLE
, remote_supported_packet
,
3954 PACKET_QPassSignals
},
3955 { "QProgramSignals", PACKET_DISABLE
, remote_supported_packet
,
3956 PACKET_QProgramSignals
},
3957 { "QStartNoAckMode", PACKET_DISABLE
, remote_supported_packet
,
3958 PACKET_QStartNoAckMode
},
3959 { "multiprocess", PACKET_DISABLE
, remote_multi_process_feature
, -1 },
3960 { "QNonStop", PACKET_DISABLE
, remote_non_stop_feature
, -1 },
3961 { "qXfer:siginfo:read", PACKET_DISABLE
, remote_supported_packet
,
3962 PACKET_qXfer_siginfo_read
},
3963 { "qXfer:siginfo:write", PACKET_DISABLE
, remote_supported_packet
,
3964 PACKET_qXfer_siginfo_write
},
3965 { "ConditionalTracepoints", PACKET_DISABLE
, remote_cond_tracepoint_feature
,
3966 PACKET_ConditionalTracepoints
},
3967 { "ConditionalBreakpoints", PACKET_DISABLE
, remote_cond_breakpoint_feature
,
3968 PACKET_ConditionalBreakpoints
},
3969 { "BreakpointCommands", PACKET_DISABLE
, remote_breakpoint_commands_feature
,
3970 PACKET_BreakpointCommands
},
3971 { "FastTracepoints", PACKET_DISABLE
, remote_fast_tracepoint_feature
,
3972 PACKET_FastTracepoints
},
3973 { "StaticTracepoints", PACKET_DISABLE
, remote_static_tracepoint_feature
,
3974 PACKET_StaticTracepoints
},
3975 {"InstallInTrace", PACKET_DISABLE
, remote_install_in_trace_feature
,
3976 PACKET_InstallInTrace
},
3977 { "DisconnectedTracing", PACKET_DISABLE
, remote_disconnected_tracing_feature
,
3979 { "ReverseContinue", PACKET_DISABLE
, remote_supported_packet
,
3981 { "ReverseStep", PACKET_DISABLE
, remote_supported_packet
,
3983 { "TracepointSource", PACKET_DISABLE
, remote_supported_packet
,
3984 PACKET_TracepointSource
},
3985 { "QAllow", PACKET_DISABLE
, remote_supported_packet
,
3987 { "EnableDisableTracepoints", PACKET_DISABLE
,
3988 remote_enable_disable_tracepoint_feature
, -1 },
3989 { "qXfer:fdpic:read", PACKET_DISABLE
, remote_supported_packet
,
3990 PACKET_qXfer_fdpic
},
3991 { "qXfer:uib:read", PACKET_DISABLE
, remote_supported_packet
,
3993 { "QDisableRandomization", PACKET_DISABLE
, remote_supported_packet
,
3994 PACKET_QDisableRandomization
},
3995 { "QAgent", PACKET_DISABLE
, remote_supported_packet
, PACKET_QAgent
},
3996 { "QTBuffer:size", PACKET_DISABLE
,
3997 remote_supported_packet
, PACKET_QTBuffer_size
},
3998 { "tracenz", PACKET_DISABLE
,
3999 remote_string_tracing_feature
, -1 },
4000 { "Qbtrace:off", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_off
},
4001 { "Qbtrace:bts", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_bts
},
4002 { "qXfer:btrace:read", PACKET_DISABLE
, remote_supported_packet
,
4003 PACKET_qXfer_btrace
}
4006 static char *remote_support_xml
;
4008 /* Register string appended to "xmlRegisters=" in qSupported query. */
4011 register_remote_support_xml (const char *xml
)
4013 #if defined(HAVE_LIBEXPAT)
4014 if (remote_support_xml
== NULL
)
4015 remote_support_xml
= concat ("xmlRegisters=", xml
, (char *) NULL
);
4018 char *copy
= xstrdup (remote_support_xml
+ 13);
4019 char *p
= strtok (copy
, ",");
4023 if (strcmp (p
, xml
) == 0)
4030 while ((p
= strtok (NULL
, ",")) != NULL
);
4033 remote_support_xml
= reconcat (remote_support_xml
,
4034 remote_support_xml
, ",", xml
,
4041 remote_query_supported_append (char *msg
, const char *append
)
4044 return reconcat (msg
, msg
, ";", append
, (char *) NULL
);
4046 return xstrdup (append
);
4050 remote_query_supported (void)
4052 struct remote_state
*rs
= get_remote_state ();
4055 unsigned char seen
[ARRAY_SIZE (remote_protocol_features
)];
4057 /* The packet support flags are handled differently for this packet
4058 than for most others. We treat an error, a disabled packet, and
4059 an empty response identically: any features which must be reported
4060 to be used will be automatically disabled. An empty buffer
4061 accomplishes this, since that is also the representation for a list
4062 containing no features. */
4065 if (remote_protocol_packets
[PACKET_qSupported
].support
!= PACKET_DISABLE
)
4068 struct cleanup
*old_chain
= make_cleanup (free_current_contents
, &q
);
4070 q
= remote_query_supported_append (q
, "multiprocess+");
4072 if (remote_support_xml
)
4073 q
= remote_query_supported_append (q
, remote_support_xml
);
4075 q
= remote_query_supported_append (q
, "qRelocInsn+");
4077 q
= reconcat (q
, "qSupported:", q
, (char *) NULL
);
4080 do_cleanups (old_chain
);
4082 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4084 /* If an error occured, warn, but do not return - just reset the
4085 buffer to empty and go on to disable features. */
4086 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSupported
])
4089 warning (_("Remote failure reply: %s"), rs
->buf
);
4094 memset (seen
, 0, sizeof (seen
));
4099 enum packet_support is_supported
;
4100 char *p
, *end
, *name_end
, *value
;
4102 /* First separate out this item from the rest of the packet. If
4103 there's another item after this, we overwrite the separator
4104 (terminated strings are much easier to work with). */
4106 end
= strchr (p
, ';');
4109 end
= p
+ strlen (p
);
4119 warning (_("empty item in \"qSupported\" response"));
4124 name_end
= strchr (p
, '=');
4127 /* This is a name=value entry. */
4128 is_supported
= PACKET_ENABLE
;
4129 value
= name_end
+ 1;
4138 is_supported
= PACKET_ENABLE
;
4142 is_supported
= PACKET_DISABLE
;
4146 is_supported
= PACKET_SUPPORT_UNKNOWN
;
4150 warning (_("unrecognized item \"%s\" "
4151 "in \"qSupported\" response"), p
);
4157 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4158 if (strcmp (remote_protocol_features
[i
].name
, p
) == 0)
4160 const struct protocol_feature
*feature
;
4163 feature
= &remote_protocol_features
[i
];
4164 feature
->func (feature
, is_supported
, value
);
4169 /* If we increased the packet size, make sure to increase the global
4170 buffer size also. We delay this until after parsing the entire
4171 qSupported packet, because this is the same buffer we were
4173 if (rs
->buf_size
< rs
->explicit_packet_size
)
4175 rs
->buf_size
= rs
->explicit_packet_size
;
4176 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
4179 /* Handle the defaults for unmentioned features. */
4180 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4183 const struct protocol_feature
*feature
;
4185 feature
= &remote_protocol_features
[i
];
4186 feature
->func (feature
, feature
->default_support
, NULL
);
4190 /* Remove any of the remote.c targets from target stack. Upper targets depend
4191 on it so remove them first. */
4194 remote_unpush_target (void)
4196 pop_all_targets_above (process_stratum
- 1);
4200 remote_open_1 (char *name
, int from_tty
,
4201 struct target_ops
*target
, int extended_p
)
4203 struct remote_state
*rs
= get_remote_state ();
4206 error (_("To open a remote debug connection, you need to specify what\n"
4207 "serial device is attached to the remote system\n"
4208 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."));
4210 /* See FIXME above. */
4211 if (!target_async_permitted
)
4212 wait_forever_enabled_p
= 1;
4214 /* If we're connected to a running target, target_preopen will kill it.
4215 Ask this question first, before target_preopen has a chance to kill
4217 if (remote_desc
!= NULL
&& !have_inferiors ())
4220 && !query (_("Already connected to a remote target. Disconnect? ")))
4221 error (_("Still connected."));
4224 /* Here the possibly existing remote target gets unpushed. */
4225 target_preopen (from_tty
);
4227 /* Make sure we send the passed signals list the next time we resume. */
4228 xfree (last_pass_packet
);
4229 last_pass_packet
= NULL
;
4231 /* Make sure we send the program signals list the next time we
4233 xfree (last_program_signals_packet
);
4234 last_program_signals_packet
= NULL
;
4236 remote_fileio_reset ();
4237 reopen_exec_file ();
4240 remote_desc
= remote_serial_open (name
);
4242 perror_with_name (name
);
4244 if (baud_rate
!= -1)
4246 if (serial_setbaudrate (remote_desc
, baud_rate
))
4248 /* The requested speed could not be set. Error out to
4249 top level after closing remote_desc. Take care to
4250 set remote_desc to NULL to avoid closing remote_desc
4252 serial_close (remote_desc
);
4254 perror_with_name (name
);
4258 serial_raw (remote_desc
);
4260 /* If there is something sitting in the buffer we might take it as a
4261 response to a command, which would be bad. */
4262 serial_flush_input (remote_desc
);
4266 puts_filtered ("Remote debugging using ");
4267 puts_filtered (name
);
4268 puts_filtered ("\n");
4270 push_target (target
); /* Switch to using remote target now. */
4272 /* Register extra event sources in the event loop. */
4273 remote_async_inferior_event_token
4274 = create_async_event_handler (remote_async_inferior_event_handler
,
4276 remote_notif_register_async_event_handler ();
4278 /* Reset the target state; these things will be queried either by
4279 remote_query_supported or as they are needed. */
4280 init_all_packet_configs ();
4281 rs
->cached_wait_status
= 0;
4282 rs
->explicit_packet_size
= 0;
4284 rs
->multi_process_aware
= 0;
4285 rs
->extended
= extended_p
;
4286 rs
->non_stop_aware
= 0;
4287 rs
->waiting_for_stop_reply
= 0;
4288 rs
->ctrlc_pending_p
= 0;
4290 general_thread
= not_sent_ptid
;
4291 continue_thread
= not_sent_ptid
;
4292 remote_traceframe_number
= -1;
4294 /* Probe for ability to use "ThreadInfo" query, as required. */
4295 use_threadinfo_query
= 1;
4296 use_threadextra_query
= 1;
4298 if (target_async_permitted
)
4300 /* With this target we start out by owning the terminal. */
4301 remote_async_terminal_ours_p
= 1;
4303 /* FIXME: cagney/1999-09-23: During the initial connection it is
4304 assumed that the target is already ready and able to respond to
4305 requests. Unfortunately remote_start_remote() eventually calls
4306 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
4307 around this. Eventually a mechanism that allows
4308 wait_for_inferior() to expect/get timeouts will be
4310 wait_forever_enabled_p
= 0;
4313 /* First delete any symbols previously loaded from shared libraries. */
4314 no_shared_libraries (NULL
, 0);
4317 init_thread_list ();
4319 /* Start the remote connection. If error() or QUIT, discard this
4320 target (we'd otherwise be in an inconsistent state) and then
4321 propogate the error on up the exception chain. This ensures that
4322 the caller doesn't stumble along blindly assuming that the
4323 function succeeded. The CLI doesn't have this problem but other
4324 UI's, such as MI do.
4326 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
4327 this function should return an error indication letting the
4328 caller restore the previous state. Unfortunately the command
4329 ``target remote'' is directly wired to this function making that
4330 impossible. On a positive note, the CLI side of this problem has
4331 been fixed - the function set_cmd_context() makes it possible for
4332 all the ``target ....'' commands to share a common callback
4333 function. See cli-dump.c. */
4335 volatile struct gdb_exception ex
;
4337 TRY_CATCH (ex
, RETURN_MASK_ALL
)
4339 remote_start_remote (from_tty
, target
, extended_p
);
4343 /* Pop the partially set up target - unless something else did
4344 already before throwing the exception. */
4345 if (remote_desc
!= NULL
)
4346 remote_unpush_target ();
4347 if (target_async_permitted
)
4348 wait_forever_enabled_p
= 1;
4349 throw_exception (ex
);
4353 if (target_async_permitted
)
4354 wait_forever_enabled_p
= 1;
4357 /* This takes a program previously attached to and detaches it. After
4358 this is done, GDB can be used to debug some other program. We
4359 better not have left any breakpoints in the target program or it'll
4360 die when it hits one. */
4363 remote_detach_1 (char *args
, int from_tty
, int extended
)
4365 int pid
= ptid_get_pid (inferior_ptid
);
4366 struct remote_state
*rs
= get_remote_state ();
4369 error (_("Argument given to \"detach\" when remotely debugging."));
4371 if (!target_has_execution
)
4372 error (_("No process to detach from."));
4376 char *exec_file
= get_exec_file (0);
4377 if (exec_file
== NULL
)
4379 printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file
,
4380 target_pid_to_str (pid_to_ptid (pid
)));
4381 gdb_flush (gdb_stdout
);
4384 /* Tell the remote target to detach. */
4385 if (remote_multi_process_p (rs
))
4386 xsnprintf (rs
->buf
, get_remote_packet_size (), "D;%x", pid
);
4388 strcpy (rs
->buf
, "D");
4391 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4393 if (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K')
4395 else if (rs
->buf
[0] == '\0')
4396 error (_("Remote doesn't know how to detach"));
4398 error (_("Can't detach process."));
4400 if (from_tty
&& !extended
)
4401 puts_filtered (_("Ending remote debugging.\n"));
4403 target_mourn_inferior ();
4407 remote_detach (struct target_ops
*ops
, char *args
, int from_tty
)
4409 remote_detach_1 (args
, from_tty
, 0);
4413 extended_remote_detach (struct target_ops
*ops
, char *args
, int from_tty
)
4415 remote_detach_1 (args
, from_tty
, 1);
4418 /* Same as remote_detach, but don't send the "D" packet; just disconnect. */
4421 remote_disconnect (struct target_ops
*target
, char *args
, int from_tty
)
4424 error (_("Argument given to \"disconnect\" when remotely debugging."));
4426 /* Make sure we unpush even the extended remote targets; mourn
4427 won't do it. So call remote_mourn_1 directly instead of
4428 target_mourn_inferior. */
4429 remote_mourn_1 (target
);
4432 puts_filtered ("Ending remote debugging.\n");
4435 /* Attach to the process specified by ARGS. If FROM_TTY is non-zero,
4436 be chatty about it. */
4439 extended_remote_attach_1 (struct target_ops
*target
, char *args
, int from_tty
)
4441 struct remote_state
*rs
= get_remote_state ();
4443 char *wait_status
= NULL
;
4445 pid
= parse_pid_to_attach (args
);
4447 /* Remote PID can be freely equal to getpid, do not check it here the same
4448 way as in other targets. */
4450 if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
4451 error (_("This target does not support attaching to a process"));
4455 char *exec_file
= get_exec_file (0);
4458 printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file
,
4459 target_pid_to_str (pid_to_ptid (pid
)));
4461 printf_unfiltered (_("Attaching to %s\n"),
4462 target_pid_to_str (pid_to_ptid (pid
)));
4464 gdb_flush (gdb_stdout
);
4467 xsnprintf (rs
->buf
, get_remote_packet_size (), "vAttach;%x", pid
);
4469 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4471 if (packet_ok (rs
->buf
,
4472 &remote_protocol_packets
[PACKET_vAttach
]) == PACKET_OK
)
4476 /* Save the reply for later. */
4477 wait_status
= alloca (strlen (rs
->buf
) + 1);
4478 strcpy (wait_status
, rs
->buf
);
4480 else if (strcmp (rs
->buf
, "OK") != 0)
4481 error (_("Attaching to %s failed with: %s"),
4482 target_pid_to_str (pid_to_ptid (pid
)),
4485 else if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
4486 error (_("This target does not support attaching to a process"));
4488 error (_("Attaching to %s failed"),
4489 target_pid_to_str (pid_to_ptid (pid
)));
4491 set_current_inferior (remote_add_inferior (0, pid
, 1));
4493 inferior_ptid
= pid_to_ptid (pid
);
4497 struct thread_info
*thread
;
4499 /* Get list of threads. */
4500 remote_threads_info (target
);
4502 thread
= first_thread_of_process (pid
);
4504 inferior_ptid
= thread
->ptid
;
4506 inferior_ptid
= pid_to_ptid (pid
);
4508 /* Invalidate our notion of the remote current thread. */
4509 record_currthread (minus_one_ptid
);
4513 /* Now, if we have thread information, update inferior_ptid. */
4514 inferior_ptid
= remote_current_thread (inferior_ptid
);
4516 /* Add the main thread to the thread list. */
4517 add_thread_silent (inferior_ptid
);
4520 /* Next, if the target can specify a description, read it. We do
4521 this before anything involving memory or registers. */
4522 target_find_description ();
4526 /* Use the previously fetched status. */
4527 gdb_assert (wait_status
!= NULL
);
4529 if (target_can_async_p ())
4531 struct notif_event
*reply
4532 = remote_notif_parse (¬if_client_stop
, wait_status
);
4534 push_stop_reply ((struct stop_reply
*) reply
);
4536 target_async (inferior_event_handler
, 0);
4540 gdb_assert (wait_status
!= NULL
);
4541 strcpy (rs
->buf
, wait_status
);
4542 rs
->cached_wait_status
= 1;
4546 gdb_assert (wait_status
== NULL
);
4550 extended_remote_attach (struct target_ops
*ops
, char *args
, int from_tty
)
4552 extended_remote_attach_1 (ops
, args
, from_tty
);
4555 /* Convert hex digit A to a number. */
4560 if (a
>= '0' && a
<= '9')
4562 else if (a
>= 'a' && a
<= 'f')
4563 return a
- 'a' + 10;
4564 else if (a
>= 'A' && a
<= 'F')
4565 return a
- 'A' + 10;
4567 error (_("Reply contains invalid hex digit %d"), a
);
4571 hex2bin (const char *hex
, gdb_byte
*bin
, int count
)
4575 for (i
= 0; i
< count
; i
++)
4577 if (hex
[0] == 0 || hex
[1] == 0)
4579 /* Hex string is short, or of uneven length.
4580 Return the count that has been converted so far. */
4583 *bin
++ = fromhex (hex
[0]) * 16 + fromhex (hex
[1]);
4589 /* Convert number NIB to a hex digit. */
4597 return 'a' + nib
- 10;
4601 bin2hex (const gdb_byte
*bin
, char *hex
, int count
)
4605 /* May use a length, or a nul-terminated string as input. */
4607 count
= strlen ((char *) bin
);
4609 for (i
= 0; i
< count
; i
++)
4611 *hex
++ = tohex ((*bin
>> 4) & 0xf);
4612 *hex
++ = tohex (*bin
++ & 0xf);
4618 /* Check for the availability of vCont. This function should also check
4622 remote_vcont_probe (struct remote_state
*rs
)
4626 strcpy (rs
->buf
, "vCont?");
4628 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4631 /* Make sure that the features we assume are supported. */
4632 if (strncmp (buf
, "vCont", 5) == 0)
4635 int support_s
, support_S
, support_c
, support_C
;
4641 rs
->support_vCont_t
= 0;
4642 while (p
&& *p
== ';')
4645 if (*p
== 's' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4647 else if (*p
== 'S' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4649 else if (*p
== 'c' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4651 else if (*p
== 'C' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4653 else if (*p
== 't' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4654 rs
->support_vCont_t
= 1;
4656 p
= strchr (p
, ';');
4659 /* If s, S, c, and C are not all supported, we can't use vCont. Clearing
4660 BUF will make packet_ok disable the packet. */
4661 if (!support_s
|| !support_S
|| !support_c
|| !support_C
)
4665 packet_ok (buf
, &remote_protocol_packets
[PACKET_vCont
]);
4668 /* Helper function for building "vCont" resumptions. Write a
4669 resumption to P. ENDP points to one-passed-the-end of the buffer
4670 we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The
4671 thread to be resumed is PTID; STEP and SIGGNAL indicate whether the
4672 resumed thread should be single-stepped and/or signalled. If PTID
4673 equals minus_one_ptid, then all threads are resumed; if PTID
4674 represents a process, then all threads of the process are resumed;
4675 the thread to be stepped and/or signalled is given in the global
4679 append_resumption (char *p
, char *endp
,
4680 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4682 struct remote_state
*rs
= get_remote_state ();
4684 if (step
&& siggnal
!= GDB_SIGNAL_0
)
4685 p
+= xsnprintf (p
, endp
- p
, ";S%02x", siggnal
);
4687 p
+= xsnprintf (p
, endp
- p
, ";s");
4688 else if (siggnal
!= GDB_SIGNAL_0
)
4689 p
+= xsnprintf (p
, endp
- p
, ";C%02x", siggnal
);
4691 p
+= xsnprintf (p
, endp
- p
, ";c");
4693 if (remote_multi_process_p (rs
) && ptid_is_pid (ptid
))
4697 /* All (-1) threads of process. */
4698 nptid
= ptid_build (ptid_get_pid (ptid
), 0, -1);
4700 p
+= xsnprintf (p
, endp
- p
, ":");
4701 p
= write_ptid (p
, endp
, nptid
);
4703 else if (!ptid_equal (ptid
, minus_one_ptid
))
4705 p
+= xsnprintf (p
, endp
- p
, ":");
4706 p
= write_ptid (p
, endp
, ptid
);
4712 /* Append a vCont continue-with-signal action for threads that have a
4713 non-zero stop signal. */
4716 append_pending_thread_resumptions (char *p
, char *endp
, ptid_t ptid
)
4718 struct thread_info
*thread
;
4720 ALL_THREADS (thread
)
4721 if (ptid_match (thread
->ptid
, ptid
)
4722 && !ptid_equal (inferior_ptid
, thread
->ptid
)
4723 && thread
->suspend
.stop_signal
!= GDB_SIGNAL_0
4724 && signal_pass_state (thread
->suspend
.stop_signal
))
4726 p
= append_resumption (p
, endp
, thread
->ptid
,
4727 0, thread
->suspend
.stop_signal
);
4728 thread
->suspend
.stop_signal
= GDB_SIGNAL_0
;
4734 /* Resume the remote inferior by using a "vCont" packet. The thread
4735 to be resumed is PTID; STEP and SIGGNAL indicate whether the
4736 resumed thread should be single-stepped and/or signalled. If PTID
4737 equals minus_one_ptid, then all threads are resumed; the thread to
4738 be stepped and/or signalled is given in the global INFERIOR_PTID.
4739 This function returns non-zero iff it resumes the inferior.
4741 This function issues a strict subset of all possible vCont commands at the
4745 remote_vcont_resume (ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4747 struct remote_state
*rs
= get_remote_state ();
4751 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
4752 remote_vcont_probe (rs
);
4754 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_DISABLE
)
4758 endp
= rs
->buf
+ get_remote_packet_size ();
4760 /* If we could generate a wider range of packets, we'd have to worry
4761 about overflowing BUF. Should there be a generic
4762 "multi-part-packet" packet? */
4764 p
+= xsnprintf (p
, endp
- p
, "vCont");
4766 if (ptid_equal (ptid
, magic_null_ptid
))
4768 /* MAGIC_NULL_PTID means that we don't have any active threads,
4769 so we don't have any TID numbers the inferior will
4770 understand. Make sure to only send forms that do not specify
4772 append_resumption (p
, endp
, minus_one_ptid
, step
, siggnal
);
4774 else if (ptid_equal (ptid
, minus_one_ptid
) || ptid_is_pid (ptid
))
4776 /* Resume all threads (of all processes, or of a single
4777 process), with preference for INFERIOR_PTID. This assumes
4778 inferior_ptid belongs to the set of all threads we are about
4780 if (step
|| siggnal
!= GDB_SIGNAL_0
)
4782 /* Step inferior_ptid, with or without signal. */
4783 p
= append_resumption (p
, endp
, inferior_ptid
, step
, siggnal
);
4786 /* Also pass down any pending signaled resumption for other
4787 threads not the current. */
4788 p
= append_pending_thread_resumptions (p
, endp
, ptid
);
4790 /* And continue others without a signal. */
4791 append_resumption (p
, endp
, ptid
, /*step=*/ 0, GDB_SIGNAL_0
);
4795 /* Scheduler locking; resume only PTID. */
4796 append_resumption (p
, endp
, ptid
, step
, siggnal
);
4799 gdb_assert (strlen (rs
->buf
) < get_remote_packet_size ());
4804 /* In non-stop, the stub replies to vCont with "OK". The stop
4805 reply will be reported asynchronously by means of a `%Stop'
4807 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4808 if (strcmp (rs
->buf
, "OK") != 0)
4809 error (_("Unexpected vCont reply in non-stop mode: %s"), rs
->buf
);
4815 /* Tell the remote machine to resume. */
4817 static enum gdb_signal last_sent_signal
= GDB_SIGNAL_0
;
4819 static int last_sent_step
;
4822 remote_resume (struct target_ops
*ops
,
4823 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4825 struct remote_state
*rs
= get_remote_state ();
4828 /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN
4829 (explained in remote-notif.c:handle_notification) so
4830 remote_notif_process is not called. We need find a place where
4831 it is safe to start a 'vNotif' sequence. It is good to do it
4832 before resuming inferior, because inferior was stopped and no RSP
4833 traffic at that moment. */
4835 remote_notif_process (¬if_client_stop
);
4837 last_sent_signal
= siggnal
;
4838 last_sent_step
= step
;
4840 /* The vCont packet doesn't need to specify threads via Hc. */
4841 /* No reverse support (yet) for vCont. */
4842 if (execution_direction
!= EXEC_REVERSE
)
4843 if (remote_vcont_resume (ptid
, step
, siggnal
))
4846 /* All other supported resume packets do use Hc, so set the continue
4848 if (ptid_equal (ptid
, minus_one_ptid
))
4849 set_continue_thread (any_thread_ptid
);
4851 set_continue_thread (ptid
);
4854 if (execution_direction
== EXEC_REVERSE
)
4856 /* We don't pass signals to the target in reverse exec mode. */
4857 if (info_verbose
&& siggnal
!= GDB_SIGNAL_0
)
4858 warning (_(" - Can't pass signal %d to target in reverse: ignored."),
4862 && remote_protocol_packets
[PACKET_bs
].support
== PACKET_DISABLE
)
4863 error (_("Remote reverse-step not supported."));
4865 && remote_protocol_packets
[PACKET_bc
].support
== PACKET_DISABLE
)
4866 error (_("Remote reverse-continue not supported."));
4868 strcpy (buf
, step
? "bs" : "bc");
4870 else if (siggnal
!= GDB_SIGNAL_0
)
4872 buf
[0] = step
? 'S' : 'C';
4873 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
4874 buf
[2] = tohex (((int) siggnal
) & 0xf);
4878 strcpy (buf
, step
? "s" : "c");
4883 /* We are about to start executing the inferior, let's register it
4884 with the event loop. NOTE: this is the one place where all the
4885 execution commands end up. We could alternatively do this in each
4886 of the execution commands in infcmd.c. */
4887 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
4888 into infcmd.c in order to allow inferior function calls to work
4889 NOT asynchronously. */
4890 if (target_can_async_p ())
4891 target_async (inferior_event_handler
, 0);
4893 /* We've just told the target to resume. The remote server will
4894 wait for the inferior to stop, and then send a stop reply. In
4895 the mean time, we can't start another command/query ourselves
4896 because the stub wouldn't be ready to process it. This applies
4897 only to the base all-stop protocol, however. In non-stop (which
4898 only supports vCont), the stub replies with an "OK", and is
4899 immediate able to process further serial input. */
4901 rs
->waiting_for_stop_reply
= 1;
4905 /* Set up the signal handler for SIGINT, while the target is
4906 executing, ovewriting the 'regular' SIGINT signal handler. */
4908 initialize_sigint_signal_handler (void)
4910 signal (SIGINT
, handle_remote_sigint
);
4913 /* Signal handler for SIGINT, while the target is executing. */
4915 handle_remote_sigint (int sig
)
4917 signal (sig
, handle_remote_sigint_twice
);
4918 mark_async_signal_handler (sigint_remote_token
);
4921 /* Signal handler for SIGINT, installed after SIGINT has already been
4922 sent once. It will take effect the second time that the user sends
4925 handle_remote_sigint_twice (int sig
)
4927 signal (sig
, handle_remote_sigint
);
4928 mark_async_signal_handler (sigint_remote_twice_token
);
4931 /* Perform the real interruption of the target execution, in response
4934 async_remote_interrupt (gdb_client_data arg
)
4937 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt called\n");
4939 target_stop (inferior_ptid
);
4942 /* Perform interrupt, if the first attempt did not succeed. Just give
4943 up on the target alltogether. */
4945 async_remote_interrupt_twice (gdb_client_data arg
)
4948 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt_twice called\n");
4953 /* Reinstall the usual SIGINT handlers, after the target has
4956 cleanup_sigint_signal_handler (void *dummy
)
4958 signal (SIGINT
, handle_sigint
);
4961 /* Send ^C to target to halt it. Target will respond, and send us a
4963 static void (*ofunc
) (int);
4965 /* The command line interface's stop routine. This function is installed
4966 as a signal handler for SIGINT. The first time a user requests a
4967 stop, we call remote_stop to send a break or ^C. If there is no
4968 response from the target (it didn't stop when the user requested it),
4969 we ask the user if he'd like to detach from the target. */
4971 remote_interrupt (int signo
)
4973 /* If this doesn't work, try more severe steps. */
4974 signal (signo
, remote_interrupt_twice
);
4976 gdb_call_async_signal_handler (sigint_remote_token
, 1);
4979 /* The user typed ^C twice. */
4982 remote_interrupt_twice (int signo
)
4984 signal (signo
, ofunc
);
4985 gdb_call_async_signal_handler (sigint_remote_twice_token
, 1);
4986 signal (signo
, remote_interrupt
);
4989 /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote
4990 thread, all threads of a remote process, or all threads of all
4994 remote_stop_ns (ptid_t ptid
)
4996 struct remote_state
*rs
= get_remote_state ();
4998 char *endp
= rs
->buf
+ get_remote_packet_size ();
5000 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
5001 remote_vcont_probe (rs
);
5003 if (!rs
->support_vCont_t
)
5004 error (_("Remote server does not support stopping threads"));
5006 if (ptid_equal (ptid
, minus_one_ptid
)
5007 || (!remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
5008 p
+= xsnprintf (p
, endp
- p
, "vCont;t");
5013 p
+= xsnprintf (p
, endp
- p
, "vCont;t:");
5015 if (ptid_is_pid (ptid
))
5016 /* All (-1) threads of process. */
5017 nptid
= ptid_build (ptid_get_pid (ptid
), 0, -1);
5020 /* Small optimization: if we already have a stop reply for
5021 this thread, no use in telling the stub we want this
5023 if (peek_stop_reply (ptid
))
5029 write_ptid (p
, endp
, nptid
);
5032 /* In non-stop, we get an immediate OK reply. The stop reply will
5033 come in asynchronously by notification. */
5035 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5036 if (strcmp (rs
->buf
, "OK") != 0)
5037 error (_("Stopping %s failed: %s"), target_pid_to_str (ptid
), rs
->buf
);
5040 /* All-stop version of target_stop. Sends a break or a ^C to stop the
5041 remote target. It is undefined which thread of which process
5042 reports the stop. */
5045 remote_stop_as (ptid_t ptid
)
5047 struct remote_state
*rs
= get_remote_state ();
5049 rs
->ctrlc_pending_p
= 1;
5051 /* If the inferior is stopped already, but the core didn't know
5052 about it yet, just ignore the request. The cached wait status
5053 will be collected in remote_wait. */
5054 if (rs
->cached_wait_status
)
5057 /* Send interrupt_sequence to remote target. */
5058 send_interrupt_sequence ();
5061 /* This is the generic stop called via the target vector. When a target
5062 interrupt is requested, either by the command line or the GUI, we
5063 will eventually end up here. */
5066 remote_stop (ptid_t ptid
)
5069 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
5072 remote_stop_ns (ptid
);
5074 remote_stop_as (ptid
);
5077 /* Ask the user what to do when an interrupt is received. */
5080 interrupt_query (void)
5082 target_terminal_ours ();
5084 if (target_can_async_p ())
5086 signal (SIGINT
, handle_sigint
);
5087 deprecated_throw_reason (RETURN_QUIT
);
5091 if (query (_("Interrupted while waiting for the program.\n\
5092 Give up (and stop debugging it)? ")))
5094 remote_unpush_target ();
5095 deprecated_throw_reason (RETURN_QUIT
);
5099 target_terminal_inferior ();
5102 /* Enable/disable target terminal ownership. Most targets can use
5103 terminal groups to control terminal ownership. Remote targets are
5104 different in that explicit transfer of ownership to/from GDB/target
5108 remote_terminal_inferior (void)
5110 if (!target_async_permitted
)
5111 /* Nothing to do. */
5114 /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*()
5115 idempotent. The event-loop GDB talking to an asynchronous target
5116 with a synchronous command calls this function from both
5117 event-top.c and infrun.c/infcmd.c. Once GDB stops trying to
5118 transfer the terminal to the target when it shouldn't this guard
5120 if (!remote_async_terminal_ours_p
)
5122 delete_file_handler (input_fd
);
5123 remote_async_terminal_ours_p
= 0;
5124 initialize_sigint_signal_handler ();
5125 /* NOTE: At this point we could also register our selves as the
5126 recipient of all input. Any characters typed could then be
5127 passed on down to the target. */
5131 remote_terminal_ours (void)
5133 if (!target_async_permitted
)
5134 /* Nothing to do. */
5137 /* See FIXME in remote_terminal_inferior. */
5138 if (remote_async_terminal_ours_p
)
5140 cleanup_sigint_signal_handler (NULL
);
5141 add_file_handler (input_fd
, stdin_event_handler
, 0);
5142 remote_async_terminal_ours_p
= 1;
5146 remote_console_output (char *msg
)
5150 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
5153 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
5157 fputs_unfiltered (tb
, gdb_stdtarg
);
5159 gdb_flush (gdb_stdtarg
);
5162 typedef struct cached_reg
5165 gdb_byte data
[MAX_REGISTER_SIZE
];
5168 DEF_VEC_O(cached_reg_t
);
5170 typedef struct stop_reply
5172 struct notif_event base
;
5174 /* The identifier of the thread about this event */
5177 struct target_waitstatus ws
;
5179 /* Expedited registers. This makes remote debugging a bit more
5180 efficient for those targets that provide critical registers as
5181 part of their normal status mechanism (as another roundtrip to
5182 fetch them is avoided). */
5183 VEC(cached_reg_t
) *regcache
;
5185 int stopped_by_watchpoint_p
;
5186 CORE_ADDR watch_data_address
;
5194 DECLARE_QUEUE_P (stop_reply_p
);
5195 DEFINE_QUEUE_P (stop_reply_p
);
5196 /* The list of already fetched and acknowledged stop events. This
5197 queue is used for notification Stop, and other notifications
5198 don't need queue for their events, because the notification events
5199 of Stop can't be consumed immediately, so that events should be
5200 queued first, and be consumed by remote_wait_{ns,as} one per
5201 time. Other notifications can consume their events immediately,
5202 so queue is not needed for them. */
5203 static QUEUE (stop_reply_p
) *stop_reply_queue
;
5206 stop_reply_xfree (struct stop_reply
*r
)
5210 VEC_free (cached_reg_t
, r
->regcache
);
5216 remote_notif_stop_parse (struct notif_client
*self
, char *buf
,
5217 struct notif_event
*event
)
5219 remote_parse_stop_reply (buf
, (struct stop_reply
*) event
);
5223 remote_notif_stop_ack (struct notif_client
*self
, char *buf
,
5224 struct notif_event
*event
)
5226 struct stop_reply
*stop_reply
= (struct stop_reply
*) event
;
5229 putpkt ((char *) self
->ack_command
);
5231 if (stop_reply
->ws
.kind
== TARGET_WAITKIND_IGNORE
)
5232 /* We got an unknown stop reply. */
5233 error (_("Unknown stop reply"));
5235 push_stop_reply (stop_reply
);
5239 remote_notif_stop_can_get_pending_events (struct notif_client
*self
)
5241 /* We can't get pending events in remote_notif_process for
5242 notification stop, and we have to do this in remote_wait_ns
5243 instead. If we fetch all queued events from stub, remote stub
5244 may exit and we have no chance to process them back in
5246 mark_async_event_handler (remote_async_inferior_event_token
);
5251 stop_reply_dtr (struct notif_event
*event
)
5253 struct stop_reply
*r
= (struct stop_reply
*) event
;
5255 VEC_free (cached_reg_t
, r
->regcache
);
5258 static struct notif_event
*
5259 remote_notif_stop_alloc_reply (void)
5261 struct notif_event
*r
5262 = (struct notif_event
*) XMALLOC (struct stop_reply
);
5264 r
->dtr
= stop_reply_dtr
;
5269 /* A client of notification Stop. */
5271 struct notif_client notif_client_stop
=
5275 remote_notif_stop_parse
,
5276 remote_notif_stop_ack
,
5277 remote_notif_stop_can_get_pending_events
,
5278 remote_notif_stop_alloc_reply
,
5282 /* A parameter to pass data in and out. */
5284 struct queue_iter_param
5287 struct stop_reply
*output
;
5290 /* Remove all queue elements meet the condition it checks. */
5293 remote_notif_remove_all (QUEUE (stop_reply_p
) *q
,
5294 QUEUE_ITER (stop_reply_p
) *iter
,
5298 struct queue_iter_param
*param
= data
;
5299 struct inferior
*inf
= param
->input
;
5301 if (inf
== NULL
|| ptid_get_pid (event
->ptid
) == inf
->pid
)
5303 stop_reply_xfree (event
);
5304 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
5310 /* Discard all pending stop replies of inferior INF. If INF is NULL,
5311 discard everything. */
5314 discard_pending_stop_replies (struct inferior
*inf
)
5317 struct queue_iter_param param
;
5318 struct stop_reply
*reply
5319 = (struct stop_reply
*) notif_client_stop
.pending_event
;
5321 /* Discard the in-flight notification. */
5324 || ptid_get_pid (reply
->ptid
) == inf
->pid
))
5326 stop_reply_xfree (reply
);
5327 notif_client_stop
.pending_event
= NULL
;
5331 param
.output
= NULL
;
5332 /* Discard the stop replies we have already pulled with
5334 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5335 remote_notif_remove_all
, ¶m
);
5338 /* A parameter to pass data in and out. */
5341 remote_notif_remove_once_on_match (QUEUE (stop_reply_p
) *q
,
5342 QUEUE_ITER (stop_reply_p
) *iter
,
5346 struct queue_iter_param
*param
= data
;
5347 ptid_t
*ptid
= param
->input
;
5349 if (ptid_match (event
->ptid
, *ptid
))
5351 param
->output
= event
;
5352 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
5359 /* Remove the first reply in 'stop_reply_queue' which matches
5362 static struct stop_reply
*
5363 remote_notif_remove_queued_reply (ptid_t ptid
)
5365 struct queue_iter_param param
;
5367 param
.input
= &ptid
;
5368 param
.output
= NULL
;
5370 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5371 remote_notif_remove_once_on_match
, ¶m
);
5373 fprintf_unfiltered (gdb_stdlog
,
5374 "notif: discard queued event: 'Stop' in %s\n",
5375 target_pid_to_str (ptid
));
5377 return param
.output
;
5380 /* Look for a queued stop reply belonging to PTID. If one is found,
5381 remove it from the queue, and return it. Returns NULL if none is
5382 found. If there are still queued events left to process, tell the
5383 event loop to get back to target_wait soon. */
5385 static struct stop_reply
*
5386 queued_stop_reply (ptid_t ptid
)
5388 struct stop_reply
*r
= remote_notif_remove_queued_reply (ptid
);
5390 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
5391 /* There's still at least an event left. */
5392 mark_async_event_handler (remote_async_inferior_event_token
);
5397 /* Push a fully parsed stop reply in the stop reply queue. Since we
5398 know that we now have at least one queued event left to pass to the
5399 core side, tell the event loop to get back to target_wait soon. */
5402 push_stop_reply (struct stop_reply
*new_event
)
5404 QUEUE_enque (stop_reply_p
, stop_reply_queue
, new_event
);
5407 fprintf_unfiltered (gdb_stdlog
,
5408 "notif: push 'Stop' %s to queue %d\n",
5409 target_pid_to_str (new_event
->ptid
),
5410 QUEUE_length (stop_reply_p
,
5413 mark_async_event_handler (remote_async_inferior_event_token
);
5417 stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p
) *q
,
5418 QUEUE_ITER (stop_reply_p
) *iter
,
5419 struct stop_reply
*event
,
5422 ptid_t
*ptid
= data
;
5424 return !(ptid_equal (*ptid
, event
->ptid
)
5425 && event
->ws
.kind
== TARGET_WAITKIND_STOPPED
);
5428 /* Returns true if we have a stop reply for PTID. */
5431 peek_stop_reply (ptid_t ptid
)
5433 return !QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5434 stop_reply_match_ptid_and_ws
, &ptid
);
5437 /* Parse the stop reply in BUF. Either the function succeeds, and the
5438 result is stored in EVENT, or throws an error. */
5441 remote_parse_stop_reply (char *buf
, struct stop_reply
*event
)
5443 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5447 event
->ptid
= null_ptid
;
5448 event
->ws
.kind
= TARGET_WAITKIND_IGNORE
;
5449 event
->ws
.value
.integer
= 0;
5450 event
->solibs_changed
= 0;
5451 event
->replay_event
= 0;
5452 event
->stopped_by_watchpoint_p
= 0;
5453 event
->regcache
= NULL
;
5458 case 'T': /* Status with PC, SP, FP, ... */
5459 /* Expedited reply, containing Signal, {regno, reg} repeat. */
5460 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
5462 n... = register number
5463 r... = register contents
5466 p
= &buf
[3]; /* after Txx */
5474 /* If the packet contains a register number, save it in
5475 pnum and set p1 to point to the character following it.
5476 Otherwise p1 points to p. */
5478 /* If this packet is an awatch packet, don't parse the 'a'
5479 as a register number. */
5481 if (strncmp (p
, "awatch", strlen("awatch")) != 0
5482 && strncmp (p
, "core", strlen ("core") != 0))
5484 /* Read the ``P'' register number. */
5485 pnum
= strtol (p
, &p_temp
, 16);
5491 if (p1
== p
) /* No register number present here. */
5493 p1
= strchr (p
, ':');
5495 error (_("Malformed packet(a) (missing colon): %s\n\
5498 if (strncmp (p
, "thread", p1
- p
) == 0)
5499 event
->ptid
= read_ptid (++p1
, &p
);
5500 else if ((strncmp (p
, "watch", p1
- p
) == 0)
5501 || (strncmp (p
, "rwatch", p1
- p
) == 0)
5502 || (strncmp (p
, "awatch", p1
- p
) == 0))
5504 event
->stopped_by_watchpoint_p
= 1;
5505 p
= unpack_varlen_hex (++p1
, &addr
);
5506 event
->watch_data_address
= (CORE_ADDR
) addr
;
5508 else if (strncmp (p
, "library", p1
- p
) == 0)
5512 while (*p_temp
&& *p_temp
!= ';')
5515 event
->solibs_changed
= 1;
5518 else if (strncmp (p
, "replaylog", p1
- p
) == 0)
5520 /* NO_HISTORY event.
5521 p1 will indicate "begin" or "end", but
5522 it makes no difference for now, so ignore it. */
5523 event
->replay_event
= 1;
5524 p_temp
= strchr (p1
+ 1, ';');
5528 else if (strncmp (p
, "core", p1
- p
) == 0)
5532 p
= unpack_varlen_hex (++p1
, &c
);
5537 /* Silently skip unknown optional info. */
5538 p_temp
= strchr (p1
+ 1, ';');
5545 struct packet_reg
*reg
= packet_reg_from_pnum (rsa
, pnum
);
5546 cached_reg_t cached_reg
;
5551 error (_("Malformed packet(b) (missing colon): %s\n\
5557 error (_("Remote sent bad register number %s: %s\n\
5559 hex_string (pnum
), p
, buf
);
5561 cached_reg
.num
= reg
->regnum
;
5563 fieldsize
= hex2bin (p
, cached_reg
.data
,
5564 register_size (target_gdbarch (),
5567 if (fieldsize
< register_size (target_gdbarch (),
5569 warning (_("Remote reply is too short: %s"), buf
);
5571 VEC_safe_push (cached_reg_t
, event
->regcache
, &cached_reg
);
5575 error (_("Remote register badly formatted: %s\nhere: %s"),
5580 case 'S': /* Old style status, just signal only. */
5581 if (event
->solibs_changed
)
5582 event
->ws
.kind
= TARGET_WAITKIND_LOADED
;
5583 else if (event
->replay_event
)
5584 event
->ws
.kind
= TARGET_WAITKIND_NO_HISTORY
;
5587 event
->ws
.kind
= TARGET_WAITKIND_STOPPED
;
5588 event
->ws
.value
.sig
= (enum gdb_signal
)
5589 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
5592 case 'W': /* Target exited. */
5599 /* GDB used to accept only 2 hex chars here. Stubs should
5600 only send more if they detect GDB supports multi-process
5602 p
= unpack_varlen_hex (&buf
[1], &value
);
5606 /* The remote process exited. */
5607 event
->ws
.kind
= TARGET_WAITKIND_EXITED
;
5608 event
->ws
.value
.integer
= value
;
5612 /* The remote process exited with a signal. */
5613 event
->ws
.kind
= TARGET_WAITKIND_SIGNALLED
;
5614 event
->ws
.value
.sig
= (enum gdb_signal
) value
;
5617 /* If no process is specified, assume inferior_ptid. */
5618 pid
= ptid_get_pid (inferior_ptid
);
5627 else if (strncmp (p
,
5628 "process:", sizeof ("process:") - 1) == 0)
5632 p
+= sizeof ("process:") - 1;
5633 unpack_varlen_hex (p
, &upid
);
5637 error (_("unknown stop reply packet: %s"), buf
);
5640 error (_("unknown stop reply packet: %s"), buf
);
5641 event
->ptid
= pid_to_ptid (pid
);
5646 if (non_stop
&& ptid_equal (event
->ptid
, null_ptid
))
5647 error (_("No process or thread specified in stop reply: %s"), buf
);
5650 /* When the stub wants to tell GDB about a new notification reply, it
5651 sends a notification (%Stop, for example). Those can come it at
5652 any time, hence, we have to make sure that any pending
5653 putpkt/getpkt sequence we're making is finished, before querying
5654 the stub for more events with the corresponding ack command
5655 (vStopped, for example). E.g., if we started a vStopped sequence
5656 immediately upon receiving the notification, something like this
5664 1.6) <-- (registers reply to step #1.3)
5666 Obviously, the reply in step #1.6 would be unexpected to a vStopped
5669 To solve this, whenever we parse a %Stop notification successfully,
5670 we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on
5671 doing whatever we were doing:
5677 <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN>
5678 2.5) <-- (registers reply to step #2.3)
5680 Eventualy after step #2.5, we return to the event loop, which
5681 notices there's an event on the
5682 REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the
5683 associated callback --- the function below. At this point, we're
5684 always safe to start a vStopped sequence. :
5687 2.7) <-- T05 thread:2
5693 remote_notif_get_pending_events (struct notif_client
*nc
)
5695 struct remote_state
*rs
= get_remote_state ();
5697 if (nc
->pending_event
)
5700 fprintf_unfiltered (gdb_stdlog
,
5701 "notif: process: '%s' ack pending event\n",
5705 nc
->ack (nc
, rs
->buf
, nc
->pending_event
);
5706 nc
->pending_event
= NULL
;
5710 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5711 if (strcmp (rs
->buf
, "OK") == 0)
5714 remote_notif_ack (nc
, rs
->buf
);
5720 fprintf_unfiltered (gdb_stdlog
,
5721 "notif: process: '%s' no pending reply\n",
5726 /* Called when it is decided that STOP_REPLY holds the info of the
5727 event that is to be returned to the core. This function always
5728 destroys STOP_REPLY. */
5731 process_stop_reply (struct stop_reply
*stop_reply
,
5732 struct target_waitstatus
*status
)
5736 *status
= stop_reply
->ws
;
5737 ptid
= stop_reply
->ptid
;
5739 /* If no thread/process was reported by the stub, assume the current
5741 if (ptid_equal (ptid
, null_ptid
))
5742 ptid
= inferior_ptid
;
5744 if (status
->kind
!= TARGET_WAITKIND_EXITED
5745 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
5747 /* Expedited registers. */
5748 if (stop_reply
->regcache
)
5750 struct regcache
*regcache
5751 = get_thread_arch_regcache (ptid
, target_gdbarch ());
5756 VEC_iterate(cached_reg_t
, stop_reply
->regcache
, ix
, reg
);
5758 regcache_raw_supply (regcache
, reg
->num
, reg
->data
);
5759 VEC_free (cached_reg_t
, stop_reply
->regcache
);
5762 remote_stopped_by_watchpoint_p
= stop_reply
->stopped_by_watchpoint_p
;
5763 remote_watch_data_address
= stop_reply
->watch_data_address
;
5765 remote_notice_new_inferior (ptid
, 0);
5766 demand_private_info (ptid
)->core
= stop_reply
->core
;
5769 stop_reply_xfree (stop_reply
);
5773 /* The non-stop mode version of target_wait. */
5776 remote_wait_ns (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5778 struct remote_state
*rs
= get_remote_state ();
5779 struct stop_reply
*stop_reply
;
5783 /* If in non-stop mode, get out of getpkt even if a
5784 notification is received. */
5786 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5787 0 /* forever */, &is_notif
);
5790 if (ret
!= -1 && !is_notif
)
5793 case 'E': /* Error of some sort. */
5794 /* We're out of sync with the target now. Did it continue
5795 or not? We can't tell which thread it was in non-stop,
5796 so just ignore this. */
5797 warning (_("Remote failure reply: %s"), rs
->buf
);
5799 case 'O': /* Console output. */
5800 remote_console_output (rs
->buf
+ 1);
5803 warning (_("Invalid remote reply: %s"), rs
->buf
);
5807 /* Acknowledge a pending stop reply that may have arrived in the
5809 if (notif_client_stop
.pending_event
!= NULL
)
5810 remote_notif_get_pending_events (¬if_client_stop
);
5812 /* If indeed we noticed a stop reply, we're done. */
5813 stop_reply
= queued_stop_reply (ptid
);
5814 if (stop_reply
!= NULL
)
5815 return process_stop_reply (stop_reply
, status
);
5817 /* Still no event. If we're just polling for an event, then
5818 return to the event loop. */
5819 if (options
& TARGET_WNOHANG
)
5821 status
->kind
= TARGET_WAITKIND_IGNORE
;
5822 return minus_one_ptid
;
5825 /* Otherwise do a blocking wait. */
5826 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5827 1 /* forever */, &is_notif
);
5831 /* Wait until the remote machine stops, then return, storing status in
5832 STATUS just as `wait' would. */
5835 remote_wait_as (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5837 struct remote_state
*rs
= get_remote_state ();
5838 ptid_t event_ptid
= null_ptid
;
5840 struct stop_reply
*stop_reply
;
5844 status
->kind
= TARGET_WAITKIND_IGNORE
;
5845 status
->value
.integer
= 0;
5847 stop_reply
= queued_stop_reply (ptid
);
5848 if (stop_reply
!= NULL
)
5849 return process_stop_reply (stop_reply
, status
);
5851 if (rs
->cached_wait_status
)
5852 /* Use the cached wait status, but only once. */
5853 rs
->cached_wait_status
= 0;
5859 if (!target_is_async_p ())
5861 ofunc
= signal (SIGINT
, remote_interrupt
);
5862 /* If the user hit C-c before this packet, or between packets,
5863 pretend that it was hit right here. */
5864 if (check_quit_flag ())
5867 remote_interrupt (SIGINT
);
5871 /* FIXME: cagney/1999-09-27: If we're in async mode we should
5872 _never_ wait for ever -> test on target_is_async_p().
5873 However, before we do that we need to ensure that the caller
5874 knows how to take the target into/out of async mode. */
5875 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5876 wait_forever_enabled_p
, &is_notif
);
5878 /* GDB gets a notification. Return to core as this event is
5880 if (ret
!= -1 && is_notif
)
5881 return minus_one_ptid
;
5883 if (!target_is_async_p ())
5884 signal (SIGINT
, ofunc
);
5889 remote_stopped_by_watchpoint_p
= 0;
5891 /* We got something. */
5892 rs
->waiting_for_stop_reply
= 0;
5894 /* Assume that the target has acknowledged Ctrl-C unless we receive
5895 an 'F' or 'O' packet. */
5896 if (buf
[0] != 'F' && buf
[0] != 'O')
5897 rs
->ctrlc_pending_p
= 0;
5901 case 'E': /* Error of some sort. */
5902 /* We're out of sync with the target now. Did it continue or
5903 not? Not is more likely, so report a stop. */
5904 warning (_("Remote failure reply: %s"), buf
);
5905 status
->kind
= TARGET_WAITKIND_STOPPED
;
5906 status
->value
.sig
= GDB_SIGNAL_0
;
5908 case 'F': /* File-I/O request. */
5909 remote_fileio_request (buf
, rs
->ctrlc_pending_p
);
5910 rs
->ctrlc_pending_p
= 0;
5912 case 'T': case 'S': case 'X': case 'W':
5914 struct stop_reply
*stop_reply
5915 = (struct stop_reply
*) remote_notif_parse (¬if_client_stop
,
5918 event_ptid
= process_stop_reply (stop_reply
, status
);
5921 case 'O': /* Console output. */
5922 remote_console_output (buf
+ 1);
5924 /* The target didn't really stop; keep waiting. */
5925 rs
->waiting_for_stop_reply
= 1;
5929 if (last_sent_signal
!= GDB_SIGNAL_0
)
5931 /* Zero length reply means that we tried 'S' or 'C' and the
5932 remote system doesn't support it. */
5933 target_terminal_ours_for_output ();
5935 ("Can't send signals to this remote system. %s not sent.\n",
5936 gdb_signal_to_name (last_sent_signal
));
5937 last_sent_signal
= GDB_SIGNAL_0
;
5938 target_terminal_inferior ();
5940 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
5941 putpkt ((char *) buf
);
5943 /* We just told the target to resume, so a stop reply is in
5945 rs
->waiting_for_stop_reply
= 1;
5948 /* else fallthrough */
5950 warning (_("Invalid remote reply: %s"), buf
);
5952 rs
->waiting_for_stop_reply
= 1;
5956 if (status
->kind
== TARGET_WAITKIND_IGNORE
)
5958 /* Nothing interesting happened. If we're doing a non-blocking
5959 poll, we're done. Otherwise, go back to waiting. */
5960 if (options
& TARGET_WNOHANG
)
5961 return minus_one_ptid
;
5965 else if (status
->kind
!= TARGET_WAITKIND_EXITED
5966 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
5968 if (!ptid_equal (event_ptid
, null_ptid
))
5969 record_currthread (event_ptid
);
5971 event_ptid
= inferior_ptid
;
5974 /* A process exit. Invalidate our notion of current thread. */
5975 record_currthread (minus_one_ptid
);
5980 /* Wait until the remote machine stops, then return, storing status in
5981 STATUS just as `wait' would. */
5984 remote_wait (struct target_ops
*ops
,
5985 ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5990 event_ptid
= remote_wait_ns (ptid
, status
, options
);
5992 event_ptid
= remote_wait_as (ptid
, status
, options
);
5994 if (target_can_async_p ())
5996 /* If there are are events left in the queue tell the event loop
5998 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
5999 mark_async_event_handler (remote_async_inferior_event_token
);
6005 /* Fetch a single register using a 'p' packet. */
6008 fetch_register_using_p (struct regcache
*regcache
, struct packet_reg
*reg
)
6010 struct remote_state
*rs
= get_remote_state ();
6012 char regp
[MAX_REGISTER_SIZE
];
6015 if (remote_protocol_packets
[PACKET_p
].support
== PACKET_DISABLE
)
6018 if (reg
->pnum
== -1)
6023 p
+= hexnumstr (p
, reg
->pnum
);
6026 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6030 switch (packet_ok (buf
, &remote_protocol_packets
[PACKET_p
]))
6034 case PACKET_UNKNOWN
:
6037 error (_("Could not fetch register \"%s\"; remote failure reply '%s'"),
6038 gdbarch_register_name (get_regcache_arch (regcache
),
6043 /* If this register is unfetchable, tell the regcache. */
6046 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
6050 /* Otherwise, parse and supply the value. */
6056 error (_("fetch_register_using_p: early buf termination"));
6058 regp
[i
++] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
6061 regcache_raw_supply (regcache
, reg
->regnum
, regp
);
6065 /* Fetch the registers included in the target's 'g' packet. */
6068 send_g_packet (void)
6070 struct remote_state
*rs
= get_remote_state ();
6073 xsnprintf (rs
->buf
, get_remote_packet_size (), "g");
6074 remote_send (&rs
->buf
, &rs
->buf_size
);
6076 /* We can get out of synch in various cases. If the first character
6077 in the buffer is not a hex character, assume that has happened
6078 and try to fetch another packet to read. */
6079 while ((rs
->buf
[0] < '0' || rs
->buf
[0] > '9')
6080 && (rs
->buf
[0] < 'A' || rs
->buf
[0] > 'F')
6081 && (rs
->buf
[0] < 'a' || rs
->buf
[0] > 'f')
6082 && rs
->buf
[0] != 'x') /* New: unavailable register value. */
6085 fprintf_unfiltered (gdb_stdlog
,
6086 "Bad register packet; fetching a new packet\n");
6087 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6090 buf_len
= strlen (rs
->buf
);
6092 /* Sanity check the received packet. */
6093 if (buf_len
% 2 != 0)
6094 error (_("Remote 'g' packet reply is of odd length: %s"), rs
->buf
);
6100 process_g_packet (struct regcache
*regcache
)
6102 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
6103 struct remote_state
*rs
= get_remote_state ();
6104 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6109 buf_len
= strlen (rs
->buf
);
6111 /* Further sanity checks, with knowledge of the architecture. */
6112 if (buf_len
> 2 * rsa
->sizeof_g_packet
)
6113 error (_("Remote 'g' packet reply is too long: %s"), rs
->buf
);
6115 /* Save the size of the packet sent to us by the target. It is used
6116 as a heuristic when determining the max size of packets that the
6117 target can safely receive. */
6118 if (rsa
->actual_register_packet_size
== 0)
6119 rsa
->actual_register_packet_size
= buf_len
;
6121 /* If this is smaller than we guessed the 'g' packet would be,
6122 update our records. A 'g' reply that doesn't include a register's
6123 value implies either that the register is not available, or that
6124 the 'p' packet must be used. */
6125 if (buf_len
< 2 * rsa
->sizeof_g_packet
)
6127 rsa
->sizeof_g_packet
= buf_len
/ 2;
6129 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
6131 if (rsa
->regs
[i
].pnum
== -1)
6134 if (rsa
->regs
[i
].offset
>= rsa
->sizeof_g_packet
)
6135 rsa
->regs
[i
].in_g_packet
= 0;
6137 rsa
->regs
[i
].in_g_packet
= 1;
6141 regs
= alloca (rsa
->sizeof_g_packet
);
6143 /* Unimplemented registers read as all bits zero. */
6144 memset (regs
, 0, rsa
->sizeof_g_packet
);
6146 /* Reply describes registers byte by byte, each byte encoded as two
6147 hex characters. Suck them all up, then supply them to the
6148 register cacheing/storage mechanism. */
6151 for (i
= 0; i
< rsa
->sizeof_g_packet
; i
++)
6153 if (p
[0] == 0 || p
[1] == 0)
6154 /* This shouldn't happen - we adjusted sizeof_g_packet above. */
6155 internal_error (__FILE__
, __LINE__
,
6156 _("unexpected end of 'g' packet reply"));
6158 if (p
[0] == 'x' && p
[1] == 'x')
6159 regs
[i
] = 0; /* 'x' */
6161 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
6165 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
6167 struct packet_reg
*r
= &rsa
->regs
[i
];
6171 if (r
->offset
* 2 >= strlen (rs
->buf
))
6172 /* This shouldn't happen - we adjusted in_g_packet above. */
6173 internal_error (__FILE__
, __LINE__
,
6174 _("unexpected end of 'g' packet reply"));
6175 else if (rs
->buf
[r
->offset
* 2] == 'x')
6177 gdb_assert (r
->offset
* 2 < strlen (rs
->buf
));
6178 /* The register isn't available, mark it as such (at
6179 the same time setting the value to zero). */
6180 regcache_raw_supply (regcache
, r
->regnum
, NULL
);
6183 regcache_raw_supply (regcache
, r
->regnum
,
6190 fetch_registers_using_g (struct regcache
*regcache
)
6193 process_g_packet (regcache
);
6196 /* Make the remote selected traceframe match GDB's selected
6200 set_remote_traceframe (void)
6204 if (remote_traceframe_number
== get_traceframe_number ())
6207 /* Avoid recursion, remote_trace_find calls us again. */
6208 remote_traceframe_number
= get_traceframe_number ();
6210 newnum
= target_trace_find (tfind_number
,
6211 get_traceframe_number (), 0, 0, NULL
);
6213 /* Should not happen. If it does, all bets are off. */
6214 if (newnum
!= get_traceframe_number ())
6215 warning (_("could not set remote traceframe"));
6219 remote_fetch_registers (struct target_ops
*ops
,
6220 struct regcache
*regcache
, int regnum
)
6222 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6225 set_remote_traceframe ();
6226 set_general_thread (inferior_ptid
);
6230 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
6232 gdb_assert (reg
!= NULL
);
6234 /* If this register might be in the 'g' packet, try that first -
6235 we are likely to read more than one register. If this is the
6236 first 'g' packet, we might be overly optimistic about its
6237 contents, so fall back to 'p'. */
6238 if (reg
->in_g_packet
)
6240 fetch_registers_using_g (regcache
);
6241 if (reg
->in_g_packet
)
6245 if (fetch_register_using_p (regcache
, reg
))
6248 /* This register is not available. */
6249 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
6254 fetch_registers_using_g (regcache
);
6256 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6257 if (!rsa
->regs
[i
].in_g_packet
)
6258 if (!fetch_register_using_p (regcache
, &rsa
->regs
[i
]))
6260 /* This register is not available. */
6261 regcache_raw_supply (regcache
, i
, NULL
);
6265 /* Prepare to store registers. Since we may send them all (using a
6266 'G' request), we have to read out the ones we don't want to change
6270 remote_prepare_to_store (struct regcache
*regcache
)
6272 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6274 gdb_byte buf
[MAX_REGISTER_SIZE
];
6276 /* Make sure the entire registers array is valid. */
6277 switch (remote_protocol_packets
[PACKET_P
].support
)
6279 case PACKET_DISABLE
:
6280 case PACKET_SUPPORT_UNKNOWN
:
6281 /* Make sure all the necessary registers are cached. */
6282 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6283 if (rsa
->regs
[i
].in_g_packet
)
6284 regcache_raw_read (regcache
, rsa
->regs
[i
].regnum
, buf
);
6291 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
6292 packet was not recognized. */
6295 store_register_using_P (const struct regcache
*regcache
,
6296 struct packet_reg
*reg
)
6298 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
6299 struct remote_state
*rs
= get_remote_state ();
6300 /* Try storing a single register. */
6301 char *buf
= rs
->buf
;
6302 gdb_byte regp
[MAX_REGISTER_SIZE
];
6305 if (remote_protocol_packets
[PACKET_P
].support
== PACKET_DISABLE
)
6308 if (reg
->pnum
== -1)
6311 xsnprintf (buf
, get_remote_packet_size (), "P%s=", phex_nz (reg
->pnum
, 0));
6312 p
= buf
+ strlen (buf
);
6313 regcache_raw_collect (regcache
, reg
->regnum
, regp
);
6314 bin2hex (regp
, p
, register_size (gdbarch
, reg
->regnum
));
6316 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6318 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_P
]))
6323 error (_("Could not write register \"%s\"; remote failure reply '%s'"),
6324 gdbarch_register_name (gdbarch
, reg
->regnum
), rs
->buf
);
6325 case PACKET_UNKNOWN
:
6328 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
6332 /* Store register REGNUM, or all registers if REGNUM == -1, from the
6333 contents of the register cache buffer. FIXME: ignores errors. */
6336 store_registers_using_G (const struct regcache
*regcache
)
6338 struct remote_state
*rs
= get_remote_state ();
6339 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6343 /* Extract all the registers in the regcache copying them into a
6348 regs
= alloca (rsa
->sizeof_g_packet
);
6349 memset (regs
, 0, rsa
->sizeof_g_packet
);
6350 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6352 struct packet_reg
*r
= &rsa
->regs
[i
];
6355 regcache_raw_collect (regcache
, r
->regnum
, regs
+ r
->offset
);
6359 /* Command describes registers byte by byte,
6360 each byte encoded as two hex characters. */
6363 /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets
6365 bin2hex (regs
, p
, rsa
->sizeof_g_packet
);
6367 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6368 if (packet_check_result (rs
->buf
) == PACKET_ERROR
)
6369 error (_("Could not write registers; remote failure reply '%s'"),
6373 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
6374 of the register cache buffer. FIXME: ignores errors. */
6377 remote_store_registers (struct target_ops
*ops
,
6378 struct regcache
*regcache
, int regnum
)
6380 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6383 set_remote_traceframe ();
6384 set_general_thread (inferior_ptid
);
6388 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
6390 gdb_assert (reg
!= NULL
);
6392 /* Always prefer to store registers using the 'P' packet if
6393 possible; we often change only a small number of registers.
6394 Sometimes we change a larger number; we'd need help from a
6395 higher layer to know to use 'G'. */
6396 if (store_register_using_P (regcache
, reg
))
6399 /* For now, don't complain if we have no way to write the
6400 register. GDB loses track of unavailable registers too
6401 easily. Some day, this may be an error. We don't have
6402 any way to read the register, either... */
6403 if (!reg
->in_g_packet
)
6406 store_registers_using_G (regcache
);
6410 store_registers_using_G (regcache
);
6412 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6413 if (!rsa
->regs
[i
].in_g_packet
)
6414 if (!store_register_using_P (regcache
, &rsa
->regs
[i
]))
6415 /* See above for why we do not issue an error here. */
6420 /* Return the number of hex digits in num. */
6423 hexnumlen (ULONGEST num
)
6427 for (i
= 0; num
!= 0; i
++)
6433 /* Set BUF to the minimum number of hex digits representing NUM. */
6436 hexnumstr (char *buf
, ULONGEST num
)
6438 int len
= hexnumlen (num
);
6440 return hexnumnstr (buf
, num
, len
);
6444 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
6447 hexnumnstr (char *buf
, ULONGEST num
, int width
)
6453 for (i
= width
- 1; i
>= 0; i
--)
6455 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
6462 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
6465 remote_address_masked (CORE_ADDR addr
)
6467 unsigned int address_size
= remote_address_size
;
6469 /* If "remoteaddresssize" was not set, default to target address size. */
6471 address_size
= gdbarch_addr_bit (target_gdbarch ());
6473 if (address_size
> 0
6474 && address_size
< (sizeof (ULONGEST
) * 8))
6476 /* Only create a mask when that mask can safely be constructed
6477 in a ULONGEST variable. */
6480 mask
= (mask
<< address_size
) - 1;
6486 /* Convert BUFFER, binary data at least LEN bytes long, into escaped
6487 binary data in OUT_BUF. Set *OUT_LEN to the length of the data
6488 encoded in OUT_BUF, and return the number of bytes in OUT_BUF
6489 (which may be more than *OUT_LEN due to escape characters). The
6490 total number of bytes in the output buffer will be at most
6494 remote_escape_output (const gdb_byte
*buffer
, int len
,
6495 gdb_byte
*out_buf
, int *out_len
,
6498 int input_index
, output_index
;
6501 for (input_index
= 0; input_index
< len
; input_index
++)
6503 gdb_byte b
= buffer
[input_index
];
6505 if (b
== '$' || b
== '#' || b
== '}')
6507 /* These must be escaped. */
6508 if (output_index
+ 2 > out_maxlen
)
6510 out_buf
[output_index
++] = '}';
6511 out_buf
[output_index
++] = b
^ 0x20;
6515 if (output_index
+ 1 > out_maxlen
)
6517 out_buf
[output_index
++] = b
;
6521 *out_len
= input_index
;
6522 return output_index
;
6525 /* Convert BUFFER, escaped data LEN bytes long, into binary data
6526 in OUT_BUF. Return the number of bytes written to OUT_BUF.
6527 Raise an error if the total number of bytes exceeds OUT_MAXLEN.
6529 This function reverses remote_escape_output. It allows more
6530 escaped characters than that function does, in particular because
6531 '*' must be escaped to avoid the run-length encoding processing
6532 in reading packets. */
6535 remote_unescape_input (const gdb_byte
*buffer
, int len
,
6536 gdb_byte
*out_buf
, int out_maxlen
)
6538 int input_index
, output_index
;
6543 for (input_index
= 0; input_index
< len
; input_index
++)
6545 gdb_byte b
= buffer
[input_index
];
6547 if (output_index
+ 1 > out_maxlen
)
6549 warning (_("Received too much data from remote target;"
6550 " ignoring overflow."));
6551 return output_index
;
6556 out_buf
[output_index
++] = b
^ 0x20;
6562 out_buf
[output_index
++] = b
;
6566 error (_("Unmatched escape character in target response."));
6568 return output_index
;
6571 /* Determine whether the remote target supports binary downloading.
6572 This is accomplished by sending a no-op memory write of zero length
6573 to the target at the specified address. It does not suffice to send
6574 the whole packet, since many stubs strip the eighth bit and
6575 subsequently compute a wrong checksum, which causes real havoc with
6578 NOTE: This can still lose if the serial line is not eight-bit
6579 clean. In cases like this, the user should clear "remote
6583 check_binary_download (CORE_ADDR addr
)
6585 struct remote_state
*rs
= get_remote_state ();
6587 switch (remote_protocol_packets
[PACKET_X
].support
)
6589 case PACKET_DISABLE
:
6593 case PACKET_SUPPORT_UNKNOWN
:
6599 p
+= hexnumstr (p
, (ULONGEST
) addr
);
6601 p
+= hexnumstr (p
, (ULONGEST
) 0);
6605 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6606 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6608 if (rs
->buf
[0] == '\0')
6611 fprintf_unfiltered (gdb_stdlog
,
6612 "binary downloading NOT "
6613 "supported by target\n");
6614 remote_protocol_packets
[PACKET_X
].support
= PACKET_DISABLE
;
6619 fprintf_unfiltered (gdb_stdlog
,
6620 "binary downloading supported by target\n");
6621 remote_protocol_packets
[PACKET_X
].support
= PACKET_ENABLE
;
6628 /* Write memory data directly to the remote machine.
6629 This does not inform the data cache; the data cache uses this.
6630 HEADER is the starting part of the packet.
6631 MEMADDR is the address in the remote memory space.
6632 MYADDR is the address of the buffer in our space.
6633 LEN is the number of bytes.
6634 PACKET_FORMAT should be either 'X' or 'M', and indicates if we
6635 should send data as binary ('X'), or hex-encoded ('M').
6637 The function creates packet of the form
6638 <HEADER><ADDRESS>,<LENGTH>:<DATA>
6640 where encoding of <DATA> is termined by PACKET_FORMAT.
6642 If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma
6645 Returns the number of bytes transferred, or 0 (setting errno) for
6646 error. Only transfer a single packet. */
6649 remote_write_bytes_aux (const char *header
, CORE_ADDR memaddr
,
6650 const gdb_byte
*myaddr
, ssize_t len
,
6651 char packet_format
, int use_length
)
6653 struct remote_state
*rs
= get_remote_state ();
6663 if (packet_format
!= 'X' && packet_format
!= 'M')
6664 internal_error (__FILE__
, __LINE__
,
6665 _("remote_write_bytes_aux: bad packet format"));
6670 payload_size
= get_memory_write_packet_size ();
6672 /* The packet buffer will be large enough for the payload;
6673 get_memory_packet_size ensures this. */
6676 /* Compute the size of the actual payload by subtracting out the
6677 packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */
6679 payload_size
-= strlen ("$,:#NN");
6681 /* The comma won't be used. */
6683 header_length
= strlen (header
);
6684 payload_size
-= header_length
;
6685 payload_size
-= hexnumlen (memaddr
);
6687 /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */
6689 strcat (rs
->buf
, header
);
6690 p
= rs
->buf
+ strlen (header
);
6692 /* Compute a best guess of the number of bytes actually transfered. */
6693 if (packet_format
== 'X')
6695 /* Best guess at number of bytes that will fit. */
6696 todo
= min (len
, payload_size
);
6698 payload_size
-= hexnumlen (todo
);
6699 todo
= min (todo
, payload_size
);
6703 /* Num bytes that will fit. */
6704 todo
= min (len
, payload_size
/ 2);
6706 payload_size
-= hexnumlen (todo
);
6707 todo
= min (todo
, payload_size
/ 2);
6711 internal_error (__FILE__
, __LINE__
,
6712 _("minimum packet size too small to write data"));
6714 /* If we already need another packet, then try to align the end
6715 of this packet to a useful boundary. */
6716 if (todo
> 2 * REMOTE_ALIGN_WRITES
&& todo
< len
)
6717 todo
= ((memaddr
+ todo
) & ~(REMOTE_ALIGN_WRITES
- 1)) - memaddr
;
6719 /* Append "<memaddr>". */
6720 memaddr
= remote_address_masked (memaddr
);
6721 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6728 /* Append <len>. Retain the location/size of <len>. It may need to
6729 be adjusted once the packet body has been created. */
6731 plenlen
= hexnumstr (p
, (ULONGEST
) todo
);
6739 /* Append the packet body. */
6740 if (packet_format
== 'X')
6742 /* Binary mode. Send target system values byte by byte, in
6743 increasing byte addresses. Only escape certain critical
6745 payload_length
= remote_escape_output (myaddr
, todo
, p
, &nr_bytes
,
6748 /* If not all TODO bytes fit, then we'll need another packet. Make
6749 a second try to keep the end of the packet aligned. Don't do
6750 this if the packet is tiny. */
6751 if (nr_bytes
< todo
&& nr_bytes
> 2 * REMOTE_ALIGN_WRITES
)
6755 new_nr_bytes
= (((memaddr
+ nr_bytes
) & ~(REMOTE_ALIGN_WRITES
- 1))
6757 if (new_nr_bytes
!= nr_bytes
)
6758 payload_length
= remote_escape_output (myaddr
, new_nr_bytes
,
6763 p
+= payload_length
;
6764 if (use_length
&& nr_bytes
< todo
)
6766 /* Escape chars have filled up the buffer prematurely,
6767 and we have actually sent fewer bytes than planned.
6768 Fix-up the length field of the packet. Use the same
6769 number of characters as before. */
6770 plen
+= hexnumnstr (plen
, (ULONGEST
) nr_bytes
, plenlen
);
6771 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
6776 /* Normal mode: Send target system values byte by byte, in
6777 increasing byte addresses. Each byte is encoded as a two hex
6779 nr_bytes
= bin2hex (myaddr
, p
, todo
);
6783 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6784 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6786 if (rs
->buf
[0] == 'E')
6788 /* There is no correspondance between what the remote protocol
6789 uses for errors and errno codes. We would like a cleaner way
6790 of representing errors (big enough to include errno codes,
6791 bfd_error codes, and others). But for now just return EIO. */
6796 /* Return NR_BYTES, not TODO, in case escape chars caused us to send
6797 fewer bytes than we'd planned. */
6801 /* Write memory data directly to the remote machine.
6802 This does not inform the data cache; the data cache uses this.
6803 MEMADDR is the address in the remote memory space.
6804 MYADDR is the address of the buffer in our space.
6805 LEN is the number of bytes.
6807 Returns number of bytes transferred, or 0 (setting errno) for
6808 error. Only transfer a single packet. */
6811 remote_write_bytes (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ssize_t len
)
6813 char *packet_format
= 0;
6815 /* Check whether the target supports binary download. */
6816 check_binary_download (memaddr
);
6818 switch (remote_protocol_packets
[PACKET_X
].support
)
6821 packet_format
= "X";
6823 case PACKET_DISABLE
:
6824 packet_format
= "M";
6826 case PACKET_SUPPORT_UNKNOWN
:
6827 internal_error (__FILE__
, __LINE__
,
6828 _("remote_write_bytes: bad internal state"));
6830 internal_error (__FILE__
, __LINE__
, _("bad switch"));
6833 return remote_write_bytes_aux (packet_format
,
6834 memaddr
, myaddr
, len
, packet_format
[0], 1);
6837 /* Read memory data directly from the remote machine.
6838 This does not use the data cache; the data cache uses this.
6839 MEMADDR is the address in the remote memory space.
6840 MYADDR is the address of the buffer in our space.
6841 LEN is the number of bytes.
6843 Returns number of bytes transferred, or 0 for error. */
6846 remote_read_bytes (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
)
6848 struct remote_state
*rs
= get_remote_state ();
6849 int max_buf_size
; /* Max size of packet output buffer. */
6857 max_buf_size
= get_memory_read_packet_size ();
6858 /* The packet buffer will be large enough for the payload;
6859 get_memory_packet_size ensures this. */
6861 /* Number if bytes that will fit. */
6862 todo
= min (len
, max_buf_size
/ 2);
6864 /* Construct "m"<memaddr>","<len>". */
6865 memaddr
= remote_address_masked (memaddr
);
6868 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6870 p
+= hexnumstr (p
, (ULONGEST
) todo
);
6873 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6874 if (rs
->buf
[0] == 'E'
6875 && isxdigit (rs
->buf
[1]) && isxdigit (rs
->buf
[2])
6876 && rs
->buf
[3] == '\0')
6878 /* There is no correspondance between what the remote protocol
6879 uses for errors and errno codes. We would like a cleaner way
6880 of representing errors (big enough to include errno codes,
6881 bfd_error codes, and others). But for now just return
6886 /* Reply describes memory byte by byte, each byte encoded as two hex
6889 i
= hex2bin (p
, myaddr
, todo
);
6890 /* Return what we have. Let higher layers handle partial reads. */
6895 /* Read or write LEN bytes from inferior memory at MEMADDR,
6896 transferring to or from debugger address BUFFER. Write to inferior
6897 if SHOULD_WRITE is nonzero. Returns length of data written or
6898 read; 0 for error. TARGET is unused. */
6901 remote_xfer_memory (CORE_ADDR mem_addr
, gdb_byte
*buffer
, int mem_len
,
6902 int should_write
, struct mem_attrib
*attrib
,
6903 struct target_ops
*target
)
6907 set_remote_traceframe ();
6908 set_general_thread (inferior_ptid
);
6911 res
= remote_write_bytes (mem_addr
, buffer
, mem_len
);
6913 res
= remote_read_bytes (mem_addr
, buffer
, mem_len
);
6918 /* Sends a packet with content determined by the printf format string
6919 FORMAT and the remaining arguments, then gets the reply. Returns
6920 whether the packet was a success, a failure, or unknown. */
6922 static enum packet_result
6923 remote_send_printf (const char *format
, ...)
6925 struct remote_state
*rs
= get_remote_state ();
6926 int max_size
= get_remote_packet_size ();
6929 va_start (ap
, format
);
6932 if (vsnprintf (rs
->buf
, max_size
, format
, ap
) >= max_size
)
6933 internal_error (__FILE__
, __LINE__
, _("Too long remote packet."));
6935 if (putpkt (rs
->buf
) < 0)
6936 error (_("Communication problem with target."));
6939 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6941 return packet_check_result (rs
->buf
);
6945 restore_remote_timeout (void *p
)
6947 int value
= *(int *)p
;
6949 remote_timeout
= value
;
6952 /* Flash writing can take quite some time. We'll set
6953 effectively infinite timeout for flash operations.
6954 In future, we'll need to decide on a better approach. */
6955 static const int remote_flash_timeout
= 1000;
6958 remote_flash_erase (struct target_ops
*ops
,
6959 ULONGEST address
, LONGEST length
)
6961 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
6962 int saved_remote_timeout
= remote_timeout
;
6963 enum packet_result ret
;
6964 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6965 &saved_remote_timeout
);
6967 remote_timeout
= remote_flash_timeout
;
6969 ret
= remote_send_printf ("vFlashErase:%s,%s",
6970 phex (address
, addr_size
),
6974 case PACKET_UNKNOWN
:
6975 error (_("Remote target does not support flash erase"));
6977 error (_("Error erasing flash with vFlashErase packet"));
6982 do_cleanups (back_to
);
6986 remote_flash_write (struct target_ops
*ops
,
6987 ULONGEST address
, LONGEST length
,
6988 const gdb_byte
*data
)
6990 int saved_remote_timeout
= remote_timeout
;
6992 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6993 &saved_remote_timeout
);
6995 remote_timeout
= remote_flash_timeout
;
6996 ret
= remote_write_bytes_aux ("vFlashWrite:", address
, data
, length
, 'X', 0);
6997 do_cleanups (back_to
);
7003 remote_flash_done (struct target_ops
*ops
)
7005 int saved_remote_timeout
= remote_timeout
;
7007 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
7008 &saved_remote_timeout
);
7010 remote_timeout
= remote_flash_timeout
;
7011 ret
= remote_send_printf ("vFlashDone");
7012 do_cleanups (back_to
);
7016 case PACKET_UNKNOWN
:
7017 error (_("Remote target does not support vFlashDone"));
7019 error (_("Error finishing flash operation"));
7026 remote_files_info (struct target_ops
*ignore
)
7028 puts_filtered ("Debugging a target over a serial line.\n");
7031 /* Stuff for dealing with the packets which are part of this protocol.
7032 See comment at top of file for details. */
7034 /* Read a single character from the remote end. */
7037 readchar (int timeout
)
7041 ch
= serial_readchar (remote_desc
, timeout
);
7046 switch ((enum serial_rc
) ch
)
7049 remote_unpush_target ();
7050 throw_error (TARGET_CLOSE_ERROR
, _("Remote connection closed"));
7053 remote_unpush_target ();
7054 throw_perror_with_name (TARGET_CLOSE_ERROR
,
7055 _("Remote communication error. "
7056 "Target disconnected."));
7058 case SERIAL_TIMEOUT
:
7064 /* Send the command in *BUF to the remote machine, and read the reply
7065 into *BUF. Report an error if we get an error reply. Resize
7066 *BUF using xrealloc if necessary to hold the result, and update
7070 remote_send (char **buf
,
7074 getpkt (buf
, sizeof_buf
, 0);
7076 if ((*buf
)[0] == 'E')
7077 error (_("Remote failure reply: %s"), *buf
);
7080 /* Return a pointer to an xmalloc'ed string representing an escaped
7081 version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t,
7082 etc. The caller is responsible for releasing the returned
7086 escape_buffer (const char *buf
, int n
)
7088 struct cleanup
*old_chain
;
7089 struct ui_file
*stb
;
7092 stb
= mem_fileopen ();
7093 old_chain
= make_cleanup_ui_file_delete (stb
);
7095 fputstrn_unfiltered (buf
, n
, 0, stb
);
7096 str
= ui_file_xstrdup (stb
, NULL
);
7097 do_cleanups (old_chain
);
7101 /* Display a null-terminated packet on stdout, for debugging, using C
7105 print_packet (char *buf
)
7107 puts_filtered ("\"");
7108 fputstr_filtered (buf
, '"', gdb_stdout
);
7109 puts_filtered ("\"");
7115 return putpkt_binary (buf
, strlen (buf
));
7118 /* Send a packet to the remote machine, with error checking. The data
7119 of the packet is in BUF. The string in BUF can be at most
7120 get_remote_packet_size () - 5 to account for the $, # and checksum,
7121 and for a possible /0 if we are debugging (remote_debug) and want
7122 to print the sent packet as a string. */
7125 putpkt_binary (char *buf
, int cnt
)
7127 struct remote_state
*rs
= get_remote_state ();
7129 unsigned char csum
= 0;
7130 char *buf2
= alloca (cnt
+ 6);
7137 /* Catch cases like trying to read memory or listing threads while
7138 we're waiting for a stop reply. The remote server wouldn't be
7139 ready to handle this request, so we'd hang and timeout. We don't
7140 have to worry about this in synchronous mode, because in that
7141 case it's not possible to issue a command while the target is
7142 running. This is not a problem in non-stop mode, because in that
7143 case, the stub is always ready to process serial input. */
7144 if (!non_stop
&& target_can_async_p () && rs
->waiting_for_stop_reply
)
7145 error (_("Cannot execute this command while the target is running."));
7147 /* We're sending out a new packet. Make sure we don't look at a
7148 stale cached response. */
7149 rs
->cached_wait_status
= 0;
7151 /* Copy the packet into buffer BUF2, encapsulating it
7152 and giving it a checksum. */
7157 for (i
= 0; i
< cnt
; i
++)
7163 *p
++ = tohex ((csum
>> 4) & 0xf);
7164 *p
++ = tohex (csum
& 0xf);
7166 /* Send it over and over until we get a positive ack. */
7170 int started_error_output
= 0;
7174 struct cleanup
*old_chain
;
7178 str
= escape_buffer (buf2
, p
- buf2
);
7179 old_chain
= make_cleanup (xfree
, str
);
7180 fprintf_unfiltered (gdb_stdlog
, "Sending packet: %s...", str
);
7181 gdb_flush (gdb_stdlog
);
7182 do_cleanups (old_chain
);
7184 if (serial_write (remote_desc
, buf2
, p
- buf2
))
7185 perror_with_name (_("putpkt: write failed"));
7187 /* If this is a no acks version of the remote protocol, send the
7188 packet and move on. */
7192 /* Read until either a timeout occurs (-2) or '+' is read.
7193 Handle any notification that arrives in the mean time. */
7196 ch
= readchar (remote_timeout
);
7204 case SERIAL_TIMEOUT
:
7207 if (started_error_output
)
7209 putchar_unfiltered ('\n');
7210 started_error_output
= 0;
7219 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
7223 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
7225 case SERIAL_TIMEOUT
:
7229 break; /* Retransmit buffer. */
7233 fprintf_unfiltered (gdb_stdlog
,
7234 "Packet instead of Ack, ignoring it\n");
7235 /* It's probably an old response sent because an ACK
7236 was lost. Gobble up the packet and ack it so it
7237 doesn't get retransmitted when we resend this
7240 serial_write (remote_desc
, "+", 1);
7241 continue; /* Now, go look for +. */
7248 /* If we got a notification, handle it, and go back to looking
7250 /* We've found the start of a notification. Now
7251 collect the data. */
7252 val
= read_frame (&rs
->buf
, &rs
->buf_size
);
7257 struct cleanup
*old_chain
;
7260 str
= escape_buffer (rs
->buf
, val
);
7261 old_chain
= make_cleanup (xfree
, str
);
7262 fprintf_unfiltered (gdb_stdlog
,
7263 " Notification received: %s\n",
7265 do_cleanups (old_chain
);
7267 handle_notification (rs
->buf
);
7268 /* We're in sync now, rewait for the ack. */
7275 if (!started_error_output
)
7277 started_error_output
= 1;
7278 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
7280 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
7281 fprintf_unfiltered (gdb_stdlog
, "%s", rs
->buf
);
7290 if (!started_error_output
)
7292 started_error_output
= 1;
7293 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
7295 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
7299 break; /* Here to retransmit. */
7303 /* This is wrong. If doing a long backtrace, the user should be
7304 able to get out next time we call QUIT, without anything as
7305 violent as interrupt_query. If we want to provide a way out of
7306 here without getting to the next QUIT, it should be based on
7307 hitting ^C twice as in remote_wait. */
7318 /* Come here after finding the start of a frame when we expected an
7319 ack. Do our best to discard the rest of this packet. */
7328 c
= readchar (remote_timeout
);
7331 case SERIAL_TIMEOUT
:
7332 /* Nothing we can do. */
7335 /* Discard the two bytes of checksum and stop. */
7336 c
= readchar (remote_timeout
);
7338 c
= readchar (remote_timeout
);
7341 case '*': /* Run length encoding. */
7342 /* Discard the repeat count. */
7343 c
= readchar (remote_timeout
);
7348 /* A regular character. */
7354 /* Come here after finding the start of the frame. Collect the rest
7355 into *BUF, verifying the checksum, length, and handling run-length
7356 compression. NUL terminate the buffer. If there is not enough room,
7357 expand *BUF using xrealloc.
7359 Returns -1 on error, number of characters in buffer (ignoring the
7360 trailing NULL) on success. (could be extended to return one of the
7361 SERIAL status indications). */
7364 read_frame (char **buf_p
,
7371 struct remote_state
*rs
= get_remote_state ();
7378 c
= readchar (remote_timeout
);
7381 case SERIAL_TIMEOUT
:
7383 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
7387 fputs_filtered ("Saw new packet start in middle of old one\n",
7389 return -1; /* Start a new packet, count retries. */
7392 unsigned char pktcsum
;
7398 check_0
= readchar (remote_timeout
);
7400 check_1
= readchar (remote_timeout
);
7402 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
7405 fputs_filtered ("Timeout in checksum, retrying\n",
7409 else if (check_0
< 0 || check_1
< 0)
7412 fputs_filtered ("Communication error in checksum\n",
7417 /* Don't recompute the checksum; with no ack packets we
7418 don't have any way to indicate a packet retransmission
7423 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
7424 if (csum
== pktcsum
)
7429 struct cleanup
*old_chain
;
7432 str
= escape_buffer (buf
, bc
);
7433 old_chain
= make_cleanup (xfree
, str
);
7434 fprintf_unfiltered (gdb_stdlog
,
7435 "Bad checksum, sentsum=0x%x, "
7436 "csum=0x%x, buf=%s\n",
7437 pktcsum
, csum
, str
);
7438 do_cleanups (old_chain
);
7440 /* Number of characters in buffer ignoring trailing
7444 case '*': /* Run length encoding. */
7449 c
= readchar (remote_timeout
);
7451 repeat
= c
- ' ' + 3; /* Compute repeat count. */
7453 /* The character before ``*'' is repeated. */
7455 if (repeat
> 0 && repeat
<= 255 && bc
> 0)
7457 if (bc
+ repeat
- 1 >= *sizeof_buf
- 1)
7459 /* Make some more room in the buffer. */
7460 *sizeof_buf
+= repeat
;
7461 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7465 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
7471 printf_filtered (_("Invalid run length encoding: %s\n"), buf
);
7475 if (bc
>= *sizeof_buf
- 1)
7477 /* Make some more room in the buffer. */
7479 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7490 /* Read a packet from the remote machine, with error checking, and
7491 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7492 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7493 rather than timing out; this is used (in synchronous mode) to wait
7494 for a target that is is executing user code to stop. */
7495 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
7496 don't have to change all the calls to getpkt to deal with the
7497 return value, because at the moment I don't know what the right
7498 thing to do it for those. */
7506 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
7510 /* Read a packet from the remote machine, with error checking, and
7511 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7512 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7513 rather than timing out; this is used (in synchronous mode) to wait
7514 for a target that is is executing user code to stop. If FOREVER ==
7515 0, this function is allowed to time out gracefully and return an
7516 indication of this to the caller. Otherwise return the number of
7517 bytes read. If EXPECTING_NOTIF, consider receiving a notification
7518 enough reason to return to the caller. *IS_NOTIF is an output
7519 boolean that indicates whether *BUF holds a notification or not
7520 (a regular packet). */
7523 getpkt_or_notif_sane_1 (char **buf
, long *sizeof_buf
, int forever
,
7524 int expecting_notif
, int *is_notif
)
7526 struct remote_state
*rs
= get_remote_state ();
7532 /* We're reading a new response. Make sure we don't look at a
7533 previously cached response. */
7534 rs
->cached_wait_status
= 0;
7536 strcpy (*buf
, "timeout");
7539 timeout
= watchdog
> 0 ? watchdog
: -1;
7540 else if (expecting_notif
)
7541 timeout
= 0; /* There should already be a char in the buffer. If
7544 timeout
= remote_timeout
;
7548 /* Process any number of notifications, and then return when
7552 /* If we get a timeout or bad checksm, retry up to MAX_TRIES
7554 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
7556 /* This can loop forever if the remote side sends us
7557 characters continuously, but if it pauses, we'll get
7558 SERIAL_TIMEOUT from readchar because of timeout. Then
7559 we'll count that as a retry.
7561 Note that even when forever is set, we will only wait
7562 forever prior to the start of a packet. After that, we
7563 expect characters to arrive at a brisk pace. They should
7564 show up within remote_timeout intervals. */
7566 c
= readchar (timeout
);
7567 while (c
!= SERIAL_TIMEOUT
&& c
!= '$' && c
!= '%');
7569 if (c
== SERIAL_TIMEOUT
)
7571 if (expecting_notif
)
7572 return -1; /* Don't complain, it's normal to not get
7573 anything in this case. */
7575 if (forever
) /* Watchdog went off? Kill the target. */
7578 remote_unpush_target ();
7579 throw_error (TARGET_CLOSE_ERROR
,
7580 _("Watchdog timeout has expired. "
7581 "Target detached."));
7584 fputs_filtered ("Timed out.\n", gdb_stdlog
);
7588 /* We've found the start of a packet or notification.
7589 Now collect the data. */
7590 val
= read_frame (buf
, sizeof_buf
);
7595 serial_write (remote_desc
, "-", 1);
7598 if (tries
> MAX_TRIES
)
7600 /* We have tried hard enough, and just can't receive the
7601 packet/notification. Give up. */
7602 printf_unfiltered (_("Ignoring packet error, continuing...\n"));
7604 /* Skip the ack char if we're in no-ack mode. */
7605 if (!rs
->noack_mode
)
7606 serial_write (remote_desc
, "+", 1);
7610 /* If we got an ordinary packet, return that to our caller. */
7615 struct cleanup
*old_chain
;
7618 str
= escape_buffer (*buf
, val
);
7619 old_chain
= make_cleanup (xfree
, str
);
7620 fprintf_unfiltered (gdb_stdlog
, "Packet received: %s\n", str
);
7621 do_cleanups (old_chain
);
7624 /* Skip the ack char if we're in no-ack mode. */
7625 if (!rs
->noack_mode
)
7626 serial_write (remote_desc
, "+", 1);
7627 if (is_notif
!= NULL
)
7632 /* If we got a notification, handle it, and go back to looking
7636 gdb_assert (c
== '%');
7640 struct cleanup
*old_chain
;
7643 str
= escape_buffer (*buf
, val
);
7644 old_chain
= make_cleanup (xfree
, str
);
7645 fprintf_unfiltered (gdb_stdlog
,
7646 " Notification received: %s\n",
7648 do_cleanups (old_chain
);
7650 if (is_notif
!= NULL
)
7653 handle_notification (*buf
);
7655 /* Notifications require no acknowledgement. */
7657 if (expecting_notif
)
7664 getpkt_sane (char **buf
, long *sizeof_buf
, int forever
)
7666 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 0, NULL
);
7670 getpkt_or_notif_sane (char **buf
, long *sizeof_buf
, int forever
,
7673 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 1,
7678 /* A helper function that just calls putpkt; for type correctness. */
7681 putpkt_for_catch_errors (void *arg
)
7683 return putpkt (arg
);
7687 remote_kill (struct target_ops
*ops
)
7689 /* Use catch_errors so the user can quit from gdb even when we
7690 aren't on speaking terms with the remote system. */
7691 catch_errors (putpkt_for_catch_errors
, "k", "", RETURN_MASK_ERROR
);
7693 /* Don't wait for it to die. I'm not really sure it matters whether
7694 we do or not. For the existing stubs, kill is a noop. */
7695 target_mourn_inferior ();
7699 remote_vkill (int pid
, struct remote_state
*rs
)
7701 if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
7704 /* Tell the remote target to detach. */
7705 xsnprintf (rs
->buf
, get_remote_packet_size (), "vKill;%x", pid
);
7707 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7709 if (packet_ok (rs
->buf
,
7710 &remote_protocol_packets
[PACKET_vKill
]) == PACKET_OK
)
7712 else if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
7719 extended_remote_kill (struct target_ops
*ops
)
7722 int pid
= ptid_get_pid (inferior_ptid
);
7723 struct remote_state
*rs
= get_remote_state ();
7725 res
= remote_vkill (pid
, rs
);
7726 if (res
== -1 && !(rs
->extended
&& remote_multi_process_p (rs
)))
7728 /* Don't try 'k' on a multi-process aware stub -- it has no way
7729 to specify the pid. */
7733 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7734 if (rs
->buf
[0] != 'O' || rs
->buf
[0] != 'K')
7737 /* Don't wait for it to die. I'm not really sure it matters whether
7738 we do or not. For the existing stubs, kill is a noop. */
7744 error (_("Can't kill process"));
7746 target_mourn_inferior ();
7750 remote_mourn (struct target_ops
*ops
)
7752 remote_mourn_1 (ops
);
7755 /* Worker function for remote_mourn. */
7757 remote_mourn_1 (struct target_ops
*target
)
7759 unpush_target (target
);
7761 /* remote_close takes care of doing most of the clean up. */
7762 generic_mourn_inferior ();
7766 extended_remote_mourn_1 (struct target_ops
*target
)
7768 struct remote_state
*rs
= get_remote_state ();
7770 /* In case we got here due to an error, but we're going to stay
7772 rs
->waiting_for_stop_reply
= 0;
7774 /* If the current general thread belonged to the process we just
7775 detached from or has exited, the remote side current general
7776 thread becomes undefined. Considering a case like this:
7778 - We just got here due to a detach.
7779 - The process that we're detaching from happens to immediately
7780 report a global breakpoint being hit in non-stop mode, in the
7781 same thread we had selected before.
7782 - GDB attaches to this process again.
7783 - This event happens to be the next event we handle.
7785 GDB would consider that the current general thread didn't need to
7786 be set on the stub side (with Hg), since for all it knew,
7787 GENERAL_THREAD hadn't changed.
7789 Notice that although in all-stop mode, the remote server always
7790 sets the current thread to the thread reporting the stop event,
7791 that doesn't happen in non-stop mode; in non-stop, the stub *must
7792 not* change the current thread when reporting a breakpoint hit,
7793 due to the decoupling of event reporting and event handling.
7795 To keep things simple, we always invalidate our notion of the
7797 record_currthread (minus_one_ptid
);
7799 /* Unlike "target remote", we do not want to unpush the target; then
7800 the next time the user says "run", we won't be connected. */
7802 /* Call common code to mark the inferior as not running. */
7803 generic_mourn_inferior ();
7805 if (!have_inferiors ())
7807 if (!remote_multi_process_p (rs
))
7809 /* Check whether the target is running now - some remote stubs
7810 automatically restart after kill. */
7812 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7814 if (rs
->buf
[0] == 'S' || rs
->buf
[0] == 'T')
7816 /* Assume that the target has been restarted. Set
7817 inferior_ptid so that bits of core GDB realizes
7818 there's something here, e.g., so that the user can
7819 say "kill" again. */
7820 inferior_ptid
= magic_null_ptid
;
7827 extended_remote_mourn (struct target_ops
*ops
)
7829 extended_remote_mourn_1 (ops
);
7833 extended_remote_supports_disable_randomization (void)
7835 return (remote_protocol_packets
[PACKET_QDisableRandomization
].support
7840 extended_remote_disable_randomization (int val
)
7842 struct remote_state
*rs
= get_remote_state ();
7845 xsnprintf (rs
->buf
, get_remote_packet_size (), "QDisableRandomization:%x",
7848 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
7850 error (_("Target does not support QDisableRandomization."));
7851 if (strcmp (reply
, "OK") != 0)
7852 error (_("Bogus QDisableRandomization reply from target: %s"), reply
);
7856 extended_remote_run (char *args
)
7858 struct remote_state
*rs
= get_remote_state ();
7861 /* If the user has disabled vRun support, or we have detected that
7862 support is not available, do not try it. */
7863 if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
7866 strcpy (rs
->buf
, "vRun;");
7867 len
= strlen (rs
->buf
);
7869 if (strlen (remote_exec_file
) * 2 + len
>= get_remote_packet_size ())
7870 error (_("Remote file name too long for run packet"));
7871 len
+= 2 * bin2hex ((gdb_byte
*) remote_exec_file
, rs
->buf
+ len
, 0);
7873 gdb_assert (args
!= NULL
);
7876 struct cleanup
*back_to
;
7880 argv
= gdb_buildargv (args
);
7881 back_to
= make_cleanup ((void (*) (void *)) freeargv
, argv
);
7882 for (i
= 0; argv
[i
] != NULL
; i
++)
7884 if (strlen (argv
[i
]) * 2 + 1 + len
>= get_remote_packet_size ())
7885 error (_("Argument list too long for run packet"));
7886 rs
->buf
[len
++] = ';';
7887 len
+= 2 * bin2hex ((gdb_byte
*) argv
[i
], rs
->buf
+ len
, 0);
7889 do_cleanups (back_to
);
7892 rs
->buf
[len
++] = '\0';
7895 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7897 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vRun
]) == PACKET_OK
)
7899 /* We have a wait response. All is well. */
7902 else if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
7903 /* It wasn't disabled before, but it is now. */
7907 if (remote_exec_file
[0] == '\0')
7908 error (_("Running the default executable on the remote target failed; "
7909 "try \"set remote exec-file\"?"));
7911 error (_("Running \"%s\" on the remote target failed"),
7916 /* In the extended protocol we want to be able to do things like
7917 "run" and have them basically work as expected. So we need
7918 a special create_inferior function. We support changing the
7919 executable file and the command line arguments, but not the
7923 extended_remote_create_inferior_1 (char *exec_file
, char *args
,
7924 char **env
, int from_tty
)
7928 struct remote_state
*rs
= get_remote_state ();
7930 /* If running asynchronously, register the target file descriptor
7931 with the event loop. */
7932 if (target_can_async_p ())
7933 target_async (inferior_event_handler
, 0);
7935 /* Disable address space randomization if requested (and supported). */
7936 if (extended_remote_supports_disable_randomization ())
7937 extended_remote_disable_randomization (disable_randomization
);
7939 /* Now restart the remote server. */
7940 run_worked
= extended_remote_run (args
) != -1;
7943 /* vRun was not supported. Fail if we need it to do what the
7945 if (remote_exec_file
[0])
7946 error (_("Remote target does not support \"set remote exec-file\""));
7948 error (_("Remote target does not support \"set args\" or run <ARGS>"));
7950 /* Fall back to "R". */
7951 extended_remote_restart ();
7954 if (!have_inferiors ())
7956 /* Clean up from the last time we ran, before we mark the target
7957 running again. This will mark breakpoints uninserted, and
7958 get_offsets may insert breakpoints. */
7959 init_thread_list ();
7960 init_wait_for_inferior ();
7963 /* vRun's success return is a stop reply. */
7964 stop_reply
= run_worked
? rs
->buf
: NULL
;
7965 add_current_inferior_and_thread (stop_reply
);
7967 /* Get updated offsets, if the stub uses qOffsets. */
7972 extended_remote_create_inferior (struct target_ops
*ops
,
7973 char *exec_file
, char *args
,
7974 char **env
, int from_tty
)
7976 extended_remote_create_inferior_1 (exec_file
, args
, env
, from_tty
);
7980 /* Given a location's target info BP_TGT and the packet buffer BUF, output
7981 the list of conditions (in agent expression bytecode format), if any, the
7982 target needs to evaluate. The output is placed into the packet buffer
7983 started from BUF and ended at BUF_END. */
7986 remote_add_target_side_condition (struct gdbarch
*gdbarch
,
7987 struct bp_target_info
*bp_tgt
, char *buf
,
7990 struct agent_expr
*aexpr
= NULL
;
7993 char *buf_start
= buf
;
7995 if (VEC_empty (agent_expr_p
, bp_tgt
->conditions
))
7998 buf
+= strlen (buf
);
7999 xsnprintf (buf
, buf_end
- buf
, "%s", ";");
8002 /* Send conditions to the target and free the vector. */
8004 VEC_iterate (agent_expr_p
, bp_tgt
->conditions
, ix
, aexpr
);
8007 xsnprintf (buf
, buf_end
- buf
, "X%x,", aexpr
->len
);
8008 buf
+= strlen (buf
);
8009 for (i
= 0; i
< aexpr
->len
; ++i
)
8010 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
8014 VEC_free (agent_expr_p
, bp_tgt
->conditions
);
8019 remote_add_target_side_commands (struct gdbarch
*gdbarch
,
8020 struct bp_target_info
*bp_tgt
, char *buf
)
8022 struct agent_expr
*aexpr
= NULL
;
8025 if (VEC_empty (agent_expr_p
, bp_tgt
->tcommands
))
8028 buf
+= strlen (buf
);
8030 sprintf (buf
, ";cmds:%x,", bp_tgt
->persist
);
8031 buf
+= strlen (buf
);
8033 /* Concatenate all the agent expressions that are commands into the
8036 VEC_iterate (agent_expr_p
, bp_tgt
->tcommands
, ix
, aexpr
);
8039 sprintf (buf
, "X%x,", aexpr
->len
);
8040 buf
+= strlen (buf
);
8041 for (i
= 0; i
< aexpr
->len
; ++i
)
8042 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
8046 VEC_free (agent_expr_p
, bp_tgt
->tcommands
);
8049 /* Insert a breakpoint. On targets that have software breakpoint
8050 support, we ask the remote target to do the work; on targets
8051 which don't, we insert a traditional memory breakpoint. */
8054 remote_insert_breakpoint (struct gdbarch
*gdbarch
,
8055 struct bp_target_info
*bp_tgt
)
8057 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
8058 If it succeeds, then set the support to PACKET_ENABLE. If it
8059 fails, and the user has explicitly requested the Z support then
8060 report an error, otherwise, mark it disabled and go on. */
8062 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
8064 CORE_ADDR addr
= bp_tgt
->placed_address
;
8065 struct remote_state
*rs
;
8068 struct condition_list
*cond
= NULL
;
8070 gdbarch_remote_breakpoint_from_pc (gdbarch
, &addr
, &bpsize
);
8072 rs
= get_remote_state ();
8074 endbuf
= rs
->buf
+ get_remote_packet_size ();
8079 addr
= (ULONGEST
) remote_address_masked (addr
);
8080 p
+= hexnumstr (p
, addr
);
8081 xsnprintf (p
, endbuf
- p
, ",%d", bpsize
);
8083 if (remote_supports_cond_breakpoints ())
8084 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
8086 if (remote_can_run_breakpoint_commands ())
8087 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
8090 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8092 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
]))
8097 bp_tgt
->placed_address
= addr
;
8098 bp_tgt
->placed_size
= bpsize
;
8100 case PACKET_UNKNOWN
:
8105 return memory_insert_breakpoint (gdbarch
, bp_tgt
);
8109 remote_remove_breakpoint (struct gdbarch
*gdbarch
,
8110 struct bp_target_info
*bp_tgt
)
8112 CORE_ADDR addr
= bp_tgt
->placed_address
;
8113 struct remote_state
*rs
= get_remote_state ();
8115 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
8118 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8124 addr
= (ULONGEST
) remote_address_masked (bp_tgt
->placed_address
);
8125 p
+= hexnumstr (p
, addr
);
8126 xsnprintf (p
, endbuf
- p
, ",%d", bp_tgt
->placed_size
);
8129 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8131 return (rs
->buf
[0] == 'E');
8134 return memory_remove_breakpoint (gdbarch
, bp_tgt
);
8138 watchpoint_to_Z_packet (int type
)
8143 return Z_PACKET_WRITE_WP
;
8146 return Z_PACKET_READ_WP
;
8149 return Z_PACKET_ACCESS_WP
;
8152 internal_error (__FILE__
, __LINE__
,
8153 _("hw_bp_to_z: bad watchpoint type %d"), type
);
8158 remote_insert_watchpoint (CORE_ADDR addr
, int len
, int type
,
8159 struct expression
*cond
)
8161 struct remote_state
*rs
= get_remote_state ();
8162 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8164 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
8166 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
8169 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "Z%x,", packet
);
8170 p
= strchr (rs
->buf
, '\0');
8171 addr
= remote_address_masked (addr
);
8172 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8173 xsnprintf (p
, endbuf
- p
, ",%x", len
);
8176 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8178 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
8182 case PACKET_UNKNOWN
:
8187 internal_error (__FILE__
, __LINE__
,
8188 _("remote_insert_watchpoint: reached end of function"));
8192 remote_watchpoint_addr_within_range (struct target_ops
*target
, CORE_ADDR addr
,
8193 CORE_ADDR start
, int length
)
8195 CORE_ADDR diff
= remote_address_masked (addr
- start
);
8197 return diff
< length
;
8202 remote_remove_watchpoint (CORE_ADDR addr
, int len
, int type
,
8203 struct expression
*cond
)
8205 struct remote_state
*rs
= get_remote_state ();
8206 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8208 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
8210 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
8213 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "z%x,", packet
);
8214 p
= strchr (rs
->buf
, '\0');
8215 addr
= remote_address_masked (addr
);
8216 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8217 xsnprintf (p
, endbuf
- p
, ",%x", len
);
8219 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8221 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
8224 case PACKET_UNKNOWN
:
8229 internal_error (__FILE__
, __LINE__
,
8230 _("remote_remove_watchpoint: reached end of function"));
8234 int remote_hw_watchpoint_limit
= -1;
8235 int remote_hw_watchpoint_length_limit
= -1;
8236 int remote_hw_breakpoint_limit
= -1;
8239 remote_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
8241 if (remote_hw_watchpoint_length_limit
== 0)
8243 else if (remote_hw_watchpoint_length_limit
< 0)
8245 else if (len
<= remote_hw_watchpoint_length_limit
)
8252 remote_check_watch_resources (int type
, int cnt
, int ot
)
8254 if (type
== bp_hardware_breakpoint
)
8256 if (remote_hw_breakpoint_limit
== 0)
8258 else if (remote_hw_breakpoint_limit
< 0)
8260 else if (cnt
<= remote_hw_breakpoint_limit
)
8265 if (remote_hw_watchpoint_limit
== 0)
8267 else if (remote_hw_watchpoint_limit
< 0)
8271 else if (cnt
<= remote_hw_watchpoint_limit
)
8278 remote_stopped_by_watchpoint (void)
8280 return remote_stopped_by_watchpoint_p
;
8284 remote_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr_p
)
8288 if (remote_stopped_by_watchpoint ())
8290 *addr_p
= remote_watch_data_address
;
8299 remote_insert_hw_breakpoint (struct gdbarch
*gdbarch
,
8300 struct bp_target_info
*bp_tgt
)
8303 struct remote_state
*rs
;
8307 /* The length field should be set to the size of a breakpoint
8308 instruction, even though we aren't inserting one ourselves. */
8310 gdbarch_remote_breakpoint_from_pc
8311 (gdbarch
, &bp_tgt
->placed_address
, &bp_tgt
->placed_size
);
8313 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
8316 rs
= get_remote_state ();
8318 endbuf
= rs
->buf
+ get_remote_packet_size ();
8324 addr
= remote_address_masked (bp_tgt
->placed_address
);
8325 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8326 xsnprintf (p
, endbuf
- p
, ",%x", bp_tgt
->placed_size
);
8328 if (remote_supports_cond_breakpoints ())
8329 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
8331 if (remote_can_run_breakpoint_commands ())
8332 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
8335 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8337 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
8340 if (rs
->buf
[1] == '.')
8342 message
= strchr (rs
->buf
+ 2, '.');
8344 error (_("Remote failure reply: %s"), message
+ 1);
8347 case PACKET_UNKNOWN
:
8352 internal_error (__FILE__
, __LINE__
,
8353 _("remote_insert_hw_breakpoint: reached end of function"));
8358 remote_remove_hw_breakpoint (struct gdbarch
*gdbarch
,
8359 struct bp_target_info
*bp_tgt
)
8362 struct remote_state
*rs
= get_remote_state ();
8364 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8366 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
8373 addr
= remote_address_masked (bp_tgt
->placed_address
);
8374 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8375 xsnprintf (p
, endbuf
- p
, ",%x", bp_tgt
->placed_size
);
8378 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8380 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
8383 case PACKET_UNKNOWN
:
8388 internal_error (__FILE__
, __LINE__
,
8389 _("remote_remove_hw_breakpoint: reached end of function"));
8392 /* Table used by the crc32 function to calcuate the checksum. */
8394 static unsigned long crc32_table
[256] =
8397 static unsigned long
8398 crc32 (const unsigned char *buf
, int len
, unsigned int crc
)
8400 if (!crc32_table
[1])
8402 /* Initialize the CRC table and the decoding table. */
8406 for (i
= 0; i
< 256; i
++)
8408 for (c
= i
<< 24, j
= 8; j
> 0; --j
)
8409 c
= c
& 0x80000000 ? (c
<< 1) ^ 0x04c11db7 : (c
<< 1);
8416 crc
= (crc
<< 8) ^ crc32_table
[((crc
>> 24) ^ *buf
) & 255];
8422 /* Verify memory using the "qCRC:" request. */
8425 remote_verify_memory (struct target_ops
*ops
,
8426 const gdb_byte
*data
, CORE_ADDR lma
, ULONGEST size
)
8428 struct remote_state
*rs
= get_remote_state ();
8429 unsigned long host_crc
, target_crc
;
8432 /* FIXME: assumes lma can fit into long. */
8433 xsnprintf (rs
->buf
, get_remote_packet_size (), "qCRC:%lx,%lx",
8434 (long) lma
, (long) size
);
8437 /* Be clever; compute the host_crc before waiting for target
8439 host_crc
= crc32 (data
, size
, 0xffffffff);
8441 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8442 if (rs
->buf
[0] == 'E')
8445 if (rs
->buf
[0] != 'C')
8446 error (_("remote target does not support this operation"));
8448 for (target_crc
= 0, tmp
= &rs
->buf
[1]; *tmp
; tmp
++)
8449 target_crc
= target_crc
* 16 + fromhex (*tmp
);
8451 return (host_crc
== target_crc
);
8454 /* compare-sections command
8456 With no arguments, compares each loadable section in the exec bfd
8457 with the same memory range on the target, and reports mismatches.
8458 Useful for verifying the image on the target against the exec file. */
8461 compare_sections_command (char *args
, int from_tty
)
8464 struct cleanup
*old_chain
;
8466 const char *sectname
;
8474 error (_("command cannot be used without an exec file"));
8476 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
8478 if (!(s
->flags
& SEC_LOAD
))
8479 continue; /* Skip non-loadable section. */
8481 size
= bfd_get_section_size (s
);
8483 continue; /* Skip zero-length section. */
8485 sectname
= bfd_get_section_name (exec_bfd
, s
);
8486 if (args
&& strcmp (args
, sectname
) != 0)
8487 continue; /* Not the section selected by user. */
8489 matched
= 1; /* Do this section. */
8492 sectdata
= xmalloc (size
);
8493 old_chain
= make_cleanup (xfree
, sectdata
);
8494 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
8496 res
= target_verify_memory (sectdata
, lma
, size
);
8499 error (_("target memory fault, section %s, range %s -- %s"), sectname
,
8500 paddress (target_gdbarch (), lma
),
8501 paddress (target_gdbarch (), lma
+ size
));
8503 printf_filtered ("Section %s, range %s -- %s: ", sectname
,
8504 paddress (target_gdbarch (), lma
),
8505 paddress (target_gdbarch (), lma
+ size
));
8507 printf_filtered ("matched.\n");
8510 printf_filtered ("MIS-MATCHED!\n");
8514 do_cleanups (old_chain
);
8517 warning (_("One or more sections of the remote executable does not match\n\
8518 the loaded file\n"));
8519 if (args
&& !matched
)
8520 printf_filtered (_("No loaded section named '%s'.\n"), args
);
8523 /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET
8524 into remote target. The number of bytes written to the remote
8525 target is returned, or -1 for error. */
8528 remote_write_qxfer (struct target_ops
*ops
, const char *object_name
,
8529 const char *annex
, const gdb_byte
*writebuf
,
8530 ULONGEST offset
, LONGEST len
,
8531 struct packet_config
*packet
)
8535 struct remote_state
*rs
= get_remote_state ();
8536 int max_size
= get_memory_write_packet_size ();
8538 if (packet
->support
== PACKET_DISABLE
)
8541 /* Insert header. */
8542 i
= snprintf (rs
->buf
, max_size
,
8543 "qXfer:%s:write:%s:%s:",
8544 object_name
, annex
? annex
: "",
8545 phex_nz (offset
, sizeof offset
));
8546 max_size
-= (i
+ 1);
8548 /* Escape as much data as fits into rs->buf. */
8549 buf_len
= remote_escape_output
8550 (writebuf
, len
, (rs
->buf
+ i
), &max_size
, max_size
);
8552 if (putpkt_binary (rs
->buf
, i
+ buf_len
) < 0
8553 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
8554 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8557 unpack_varlen_hex (rs
->buf
, &n
);
8561 /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet.
8562 Data at OFFSET, of up to LEN bytes, is read into READBUF; the
8563 number of bytes read is returned, or 0 for EOF, or -1 for error.
8564 The number of bytes read may be less than LEN without indicating an
8565 EOF. PACKET is checked and updated to indicate whether the remote
8566 target supports this object. */
8569 remote_read_qxfer (struct target_ops
*ops
, const char *object_name
,
8571 gdb_byte
*readbuf
, ULONGEST offset
, LONGEST len
,
8572 struct packet_config
*packet
)
8574 static char *finished_object
;
8575 static char *finished_annex
;
8576 static ULONGEST finished_offset
;
8578 struct remote_state
*rs
= get_remote_state ();
8579 LONGEST i
, n
, packet_len
;
8581 if (packet
->support
== PACKET_DISABLE
)
8584 /* Check whether we've cached an end-of-object packet that matches
8586 if (finished_object
)
8588 if (strcmp (object_name
, finished_object
) == 0
8589 && strcmp (annex
? annex
: "", finished_annex
) == 0
8590 && offset
== finished_offset
)
8593 /* Otherwise, we're now reading something different. Discard
8595 xfree (finished_object
);
8596 xfree (finished_annex
);
8597 finished_object
= NULL
;
8598 finished_annex
= NULL
;
8601 /* Request only enough to fit in a single packet. The actual data
8602 may not, since we don't know how much of it will need to be escaped;
8603 the target is free to respond with slightly less data. We subtract
8604 five to account for the response type and the protocol frame. */
8605 n
= min (get_remote_packet_size () - 5, len
);
8606 snprintf (rs
->buf
, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s",
8607 object_name
, annex
? annex
: "",
8608 phex_nz (offset
, sizeof offset
),
8609 phex_nz (n
, sizeof n
));
8610 i
= putpkt (rs
->buf
);
8615 packet_len
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
8616 if (packet_len
< 0 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8619 if (rs
->buf
[0] != 'l' && rs
->buf
[0] != 'm')
8620 error (_("Unknown remote qXfer reply: %s"), rs
->buf
);
8622 /* 'm' means there is (or at least might be) more data after this
8623 batch. That does not make sense unless there's at least one byte
8624 of data in this reply. */
8625 if (rs
->buf
[0] == 'm' && packet_len
== 1)
8626 error (_("Remote qXfer reply contained no data."));
8628 /* Got some data. */
8629 i
= remote_unescape_input (rs
->buf
+ 1, packet_len
- 1, readbuf
, n
);
8631 /* 'l' is an EOF marker, possibly including a final block of data,
8632 or possibly empty. If we have the final block of a non-empty
8633 object, record this fact to bypass a subsequent partial read. */
8634 if (rs
->buf
[0] == 'l' && offset
+ i
> 0)
8636 finished_object
= xstrdup (object_name
);
8637 finished_annex
= xstrdup (annex
? annex
: "");
8638 finished_offset
= offset
+ i
;
8645 remote_xfer_partial (struct target_ops
*ops
, enum target_object object
,
8646 const char *annex
, gdb_byte
*readbuf
,
8647 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
8649 struct remote_state
*rs
;
8654 set_remote_traceframe ();
8655 set_general_thread (inferior_ptid
);
8657 rs
= get_remote_state ();
8659 /* Handle memory using the standard memory routines. */
8660 if (object
== TARGET_OBJECT_MEMORY
)
8666 /* If the remote target is connected but not running, we should
8667 pass this request down to a lower stratum (e.g. the executable
8669 if (!target_has_execution
)
8672 if (writebuf
!= NULL
)
8673 xfered
= remote_write_bytes (offset
, writebuf
, len
);
8675 xfered
= remote_read_bytes (offset
, readbuf
, len
);
8679 else if (xfered
== 0 && errno
== 0)
8685 /* Handle SPU memory using qxfer packets. */
8686 if (object
== TARGET_OBJECT_SPU
)
8689 return remote_read_qxfer (ops
, "spu", annex
, readbuf
, offset
, len
,
8690 &remote_protocol_packets
8691 [PACKET_qXfer_spu_read
]);
8693 return remote_write_qxfer (ops
, "spu", annex
, writebuf
, offset
, len
,
8694 &remote_protocol_packets
8695 [PACKET_qXfer_spu_write
]);
8698 /* Handle extra signal info using qxfer packets. */
8699 if (object
== TARGET_OBJECT_SIGNAL_INFO
)
8702 return remote_read_qxfer (ops
, "siginfo", annex
, readbuf
, offset
, len
,
8703 &remote_protocol_packets
8704 [PACKET_qXfer_siginfo_read
]);
8706 return remote_write_qxfer (ops
, "siginfo", annex
,
8707 writebuf
, offset
, len
,
8708 &remote_protocol_packets
8709 [PACKET_qXfer_siginfo_write
]);
8712 if (object
== TARGET_OBJECT_STATIC_TRACE_DATA
)
8715 return remote_read_qxfer (ops
, "statictrace", annex
,
8716 readbuf
, offset
, len
,
8717 &remote_protocol_packets
8718 [PACKET_qXfer_statictrace_read
]);
8723 /* Only handle flash writes. */
8724 if (writebuf
!= NULL
)
8730 case TARGET_OBJECT_FLASH
:
8731 xfered
= remote_flash_write (ops
, offset
, len
, writebuf
);
8735 else if (xfered
== 0 && errno
== 0)
8745 /* Map pre-existing objects onto letters. DO NOT do this for new
8746 objects!!! Instead specify new query packets. */
8749 case TARGET_OBJECT_AVR
:
8753 case TARGET_OBJECT_AUXV
:
8754 gdb_assert (annex
== NULL
);
8755 return remote_read_qxfer (ops
, "auxv", annex
, readbuf
, offset
, len
,
8756 &remote_protocol_packets
[PACKET_qXfer_auxv
]);
8758 case TARGET_OBJECT_AVAILABLE_FEATURES
:
8759 return remote_read_qxfer
8760 (ops
, "features", annex
, readbuf
, offset
, len
,
8761 &remote_protocol_packets
[PACKET_qXfer_features
]);
8763 case TARGET_OBJECT_LIBRARIES
:
8764 return remote_read_qxfer
8765 (ops
, "libraries", annex
, readbuf
, offset
, len
,
8766 &remote_protocol_packets
[PACKET_qXfer_libraries
]);
8768 case TARGET_OBJECT_LIBRARIES_SVR4
:
8769 return remote_read_qxfer
8770 (ops
, "libraries-svr4", annex
, readbuf
, offset
, len
,
8771 &remote_protocol_packets
[PACKET_qXfer_libraries_svr4
]);
8773 case TARGET_OBJECT_MEMORY_MAP
:
8774 gdb_assert (annex
== NULL
);
8775 return remote_read_qxfer (ops
, "memory-map", annex
, readbuf
, offset
, len
,
8776 &remote_protocol_packets
[PACKET_qXfer_memory_map
]);
8778 case TARGET_OBJECT_OSDATA
:
8779 /* Should only get here if we're connected. */
8780 gdb_assert (remote_desc
);
8781 return remote_read_qxfer
8782 (ops
, "osdata", annex
, readbuf
, offset
, len
,
8783 &remote_protocol_packets
[PACKET_qXfer_osdata
]);
8785 case TARGET_OBJECT_THREADS
:
8786 gdb_assert (annex
== NULL
);
8787 return remote_read_qxfer (ops
, "threads", annex
, readbuf
, offset
, len
,
8788 &remote_protocol_packets
[PACKET_qXfer_threads
]);
8790 case TARGET_OBJECT_TRACEFRAME_INFO
:
8791 gdb_assert (annex
== NULL
);
8792 return remote_read_qxfer
8793 (ops
, "traceframe-info", annex
, readbuf
, offset
, len
,
8794 &remote_protocol_packets
[PACKET_qXfer_traceframe_info
]);
8796 case TARGET_OBJECT_FDPIC
:
8797 return remote_read_qxfer (ops
, "fdpic", annex
, readbuf
, offset
, len
,
8798 &remote_protocol_packets
[PACKET_qXfer_fdpic
]);
8800 case TARGET_OBJECT_OPENVMS_UIB
:
8801 return remote_read_qxfer (ops
, "uib", annex
, readbuf
, offset
, len
,
8802 &remote_protocol_packets
[PACKET_qXfer_uib
]);
8804 case TARGET_OBJECT_BTRACE
:
8805 return remote_read_qxfer (ops
, "btrace", annex
, readbuf
, offset
, len
,
8806 &remote_protocol_packets
[PACKET_qXfer_btrace
]);
8812 /* Note: a zero OFFSET and LEN can be used to query the minimum
8814 if (offset
== 0 && len
== 0)
8815 return (get_remote_packet_size ());
8816 /* Minimum outbuf size is get_remote_packet_size (). If LEN is not
8817 large enough let the caller deal with it. */
8818 if (len
< get_remote_packet_size ())
8820 len
= get_remote_packet_size ();
8822 /* Except for querying the minimum buffer size, target must be open. */
8824 error (_("remote query is only available after target open"));
8826 gdb_assert (annex
!= NULL
);
8827 gdb_assert (readbuf
!= NULL
);
8833 /* We used one buffer char for the remote protocol q command and
8834 another for the query type. As the remote protocol encapsulation
8835 uses 4 chars plus one extra in case we are debugging
8836 (remote_debug), we have PBUFZIZ - 7 left to pack the query
8839 while (annex
[i
] && (i
< (get_remote_packet_size () - 8)))
8841 /* Bad caller may have sent forbidden characters. */
8842 gdb_assert (isprint (annex
[i
]) && annex
[i
] != '$' && annex
[i
] != '#');
8847 gdb_assert (annex
[i
] == '\0');
8849 i
= putpkt (rs
->buf
);
8853 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8854 strcpy ((char *) readbuf
, rs
->buf
);
8856 return strlen ((char *) readbuf
);
8860 remote_search_memory (struct target_ops
* ops
,
8861 CORE_ADDR start_addr
, ULONGEST search_space_len
,
8862 const gdb_byte
*pattern
, ULONGEST pattern_len
,
8863 CORE_ADDR
*found_addrp
)
8865 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
8866 struct remote_state
*rs
= get_remote_state ();
8867 int max_size
= get_memory_write_packet_size ();
8868 struct packet_config
*packet
=
8869 &remote_protocol_packets
[PACKET_qSearch_memory
];
8870 /* Number of packet bytes used to encode the pattern;
8871 this could be more than PATTERN_LEN due to escape characters. */
8872 int escaped_pattern_len
;
8873 /* Amount of pattern that was encodable in the packet. */
8874 int used_pattern_len
;
8877 ULONGEST found_addr
;
8879 /* Don't go to the target if we don't have to.
8880 This is done before checking packet->support to avoid the possibility that
8881 a success for this edge case means the facility works in general. */
8882 if (pattern_len
> search_space_len
)
8884 if (pattern_len
== 0)
8886 *found_addrp
= start_addr
;
8890 /* If we already know the packet isn't supported, fall back to the simple
8891 way of searching memory. */
8893 if (packet
->support
== PACKET_DISABLE
)
8895 /* Target doesn't provided special support, fall back and use the
8896 standard support (copy memory and do the search here). */
8897 return simple_search_memory (ops
, start_addr
, search_space_len
,
8898 pattern
, pattern_len
, found_addrp
);
8901 /* Insert header. */
8902 i
= snprintf (rs
->buf
, max_size
,
8903 "qSearch:memory:%s;%s;",
8904 phex_nz (start_addr
, addr_size
),
8905 phex_nz (search_space_len
, sizeof (search_space_len
)));
8906 max_size
-= (i
+ 1);
8908 /* Escape as much data as fits into rs->buf. */
8909 escaped_pattern_len
=
8910 remote_escape_output (pattern
, pattern_len
, (rs
->buf
+ i
),
8911 &used_pattern_len
, max_size
);
8913 /* Bail if the pattern is too large. */
8914 if (used_pattern_len
!= pattern_len
)
8915 error (_("Pattern is too large to transmit to remote target."));
8917 if (putpkt_binary (rs
->buf
, i
+ escaped_pattern_len
) < 0
8918 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
8919 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8921 /* The request may not have worked because the command is not
8922 supported. If so, fall back to the simple way. */
8923 if (packet
->support
== PACKET_DISABLE
)
8925 return simple_search_memory (ops
, start_addr
, search_space_len
,
8926 pattern
, pattern_len
, found_addrp
);
8931 if (rs
->buf
[0] == '0')
8933 else if (rs
->buf
[0] == '1')
8936 if (rs
->buf
[1] != ',')
8937 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
8938 unpack_varlen_hex (rs
->buf
+ 2, &found_addr
);
8939 *found_addrp
= found_addr
;
8942 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
8948 remote_rcmd (char *command
,
8949 struct ui_file
*outbuf
)
8951 struct remote_state
*rs
= get_remote_state ();
8955 error (_("remote rcmd is only available after target open"));
8957 /* Send a NULL command across as an empty command. */
8958 if (command
== NULL
)
8961 /* The query prefix. */
8962 strcpy (rs
->buf
, "qRcmd,");
8963 p
= strchr (rs
->buf
, '\0');
8965 if ((strlen (rs
->buf
) + strlen (command
) * 2 + 8/*misc*/)
8966 > get_remote_packet_size ())
8967 error (_("\"monitor\" command ``%s'' is too long."), command
);
8969 /* Encode the actual command. */
8970 bin2hex ((gdb_byte
*) command
, p
, 0);
8972 if (putpkt (rs
->buf
) < 0)
8973 error (_("Communication problem with target."));
8975 /* get/display the response */
8980 /* XXX - see also remote_get_noisy_reply(). */
8981 QUIT
; /* Allow user to bail out with ^C. */
8983 if (getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) == -1)
8985 /* Timeout. Continue to (try to) read responses.
8986 This is better than stopping with an error, assuming the stub
8987 is still executing the (long) monitor command.
8988 If needed, the user can interrupt gdb using C-c, obtaining
8989 an effect similar to stop on timeout. */
8994 error (_("Target does not support this command."));
8995 if (buf
[0] == 'O' && buf
[1] != 'K')
8997 remote_console_output (buf
+ 1); /* 'O' message from stub. */
9000 if (strcmp (buf
, "OK") == 0)
9002 if (strlen (buf
) == 3 && buf
[0] == 'E'
9003 && isdigit (buf
[1]) && isdigit (buf
[2]))
9005 error (_("Protocol error with Rcmd"));
9007 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
9009 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
9011 fputc_unfiltered (c
, outbuf
);
9017 static VEC(mem_region_s
) *
9018 remote_memory_map (struct target_ops
*ops
)
9020 VEC(mem_region_s
) *result
= NULL
;
9021 char *text
= target_read_stralloc (¤t_target
,
9022 TARGET_OBJECT_MEMORY_MAP
, NULL
);
9026 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
9028 result
= parse_memory_map (text
);
9029 do_cleanups (back_to
);
9036 packet_command (char *args
, int from_tty
)
9038 struct remote_state
*rs
= get_remote_state ();
9041 error (_("command can only be used with remote target"));
9044 error (_("remote-packet command requires packet text as argument"));
9046 puts_filtered ("sending: ");
9047 print_packet (args
);
9048 puts_filtered ("\n");
9051 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9052 puts_filtered ("received: ");
9053 print_packet (rs
->buf
);
9054 puts_filtered ("\n");
9058 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */
9060 static void display_thread_info (struct gdb_ext_thread_info
*info
);
9062 static void threadset_test_cmd (char *cmd
, int tty
);
9064 static void threadalive_test (char *cmd
, int tty
);
9066 static void threadlist_test_cmd (char *cmd
, int tty
);
9068 int get_and_display_threadinfo (threadref
*ref
);
9070 static void threadinfo_test_cmd (char *cmd
, int tty
);
9072 static int thread_display_step (threadref
*ref
, void *context
);
9074 static void threadlist_update_test_cmd (char *cmd
, int tty
);
9076 static void init_remote_threadtests (void);
9078 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */
9081 threadset_test_cmd (char *cmd
, int tty
)
9083 int sample_thread
= SAMPLE_THREAD
;
9085 printf_filtered (_("Remote threadset test\n"));
9086 set_general_thread (sample_thread
);
9091 threadalive_test (char *cmd
, int tty
)
9093 int sample_thread
= SAMPLE_THREAD
;
9094 int pid
= ptid_get_pid (inferior_ptid
);
9095 ptid_t ptid
= ptid_build (pid
, 0, sample_thread
);
9097 if (remote_thread_alive (ptid
))
9098 printf_filtered ("PASS: Thread alive test\n");
9100 printf_filtered ("FAIL: Thread alive test\n");
9103 void output_threadid (char *title
, threadref
*ref
);
9106 output_threadid (char *title
, threadref
*ref
)
9110 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex. */
9112 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
9116 threadlist_test_cmd (char *cmd
, int tty
)
9119 threadref nextthread
;
9120 int done
, result_count
;
9121 threadref threadlist
[3];
9123 printf_filtered ("Remote Threadlist test\n");
9124 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
9125 &result_count
, &threadlist
[0]))
9126 printf_filtered ("FAIL: threadlist test\n");
9129 threadref
*scan
= threadlist
;
9130 threadref
*limit
= scan
+ result_count
;
9132 while (scan
< limit
)
9133 output_threadid (" thread ", scan
++);
9138 display_thread_info (struct gdb_ext_thread_info
*info
)
9140 output_threadid ("Threadid: ", &info
->threadid
);
9141 printf_filtered ("Name: %s\n ", info
->shortname
);
9142 printf_filtered ("State: %s\n", info
->display
);
9143 printf_filtered ("other: %s\n\n", info
->more_display
);
9147 get_and_display_threadinfo (threadref
*ref
)
9151 struct gdb_ext_thread_info threadinfo
;
9153 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
9154 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
9155 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
9156 display_thread_info (&threadinfo
);
9161 threadinfo_test_cmd (char *cmd
, int tty
)
9163 int athread
= SAMPLE_THREAD
;
9167 int_to_threadref (&thread
, athread
);
9168 printf_filtered ("Remote Threadinfo test\n");
9169 if (!get_and_display_threadinfo (&thread
))
9170 printf_filtered ("FAIL cannot get thread info\n");
9174 thread_display_step (threadref
*ref
, void *context
)
9176 /* output_threadid(" threadstep ",ref); *//* simple test */
9177 return get_and_display_threadinfo (ref
);
9181 threadlist_update_test_cmd (char *cmd
, int tty
)
9183 printf_filtered ("Remote Threadlist update test\n");
9184 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
9188 init_remote_threadtests (void)
9190 add_com ("tlist", class_obscure
, threadlist_test_cmd
,
9191 _("Fetch and print the remote list of "
9192 "thread identifiers, one pkt only"));
9193 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
9194 _("Fetch and display info about one thread"));
9195 add_com ("tset", class_obscure
, threadset_test_cmd
,
9196 _("Test setting to a different thread"));
9197 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
9198 _("Iterate through updating all remote thread info"));
9199 add_com ("talive", class_obscure
, threadalive_test
,
9200 _(" Remote thread alive test "));
9205 /* Convert a thread ID to a string. Returns the string in a static
9209 remote_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
9211 static char buf
[64];
9212 struct remote_state
*rs
= get_remote_state ();
9214 if (ptid_equal (ptid
, null_ptid
))
9215 return normal_pid_to_str (ptid
);
9216 else if (ptid_is_pid (ptid
))
9218 /* Printing an inferior target id. */
9220 /* When multi-process extensions are off, there's no way in the
9221 remote protocol to know the remote process id, if there's any
9222 at all. There's one exception --- when we're connected with
9223 target extended-remote, and we manually attached to a process
9224 with "attach PID". We don't record anywhere a flag that
9225 allows us to distinguish that case from the case of
9226 connecting with extended-remote and the stub already being
9227 attached to a process, and reporting yes to qAttached, hence
9228 no smart special casing here. */
9229 if (!remote_multi_process_p (rs
))
9231 xsnprintf (buf
, sizeof buf
, "Remote target");
9235 return normal_pid_to_str (ptid
);
9239 if (ptid_equal (magic_null_ptid
, ptid
))
9240 xsnprintf (buf
, sizeof buf
, "Thread <main>");
9241 else if (rs
->extended
&& remote_multi_process_p (rs
))
9242 xsnprintf (buf
, sizeof buf
, "Thread %d.%ld",
9243 ptid_get_pid (ptid
), ptid_get_tid (ptid
));
9245 xsnprintf (buf
, sizeof buf
, "Thread %ld",
9246 ptid_get_tid (ptid
));
9251 /* Get the address of the thread local variable in OBJFILE which is
9252 stored at OFFSET within the thread local storage for thread PTID. */
9255 remote_get_thread_local_address (struct target_ops
*ops
,
9256 ptid_t ptid
, CORE_ADDR lm
, CORE_ADDR offset
)
9258 if (remote_protocol_packets
[PACKET_qGetTLSAddr
].support
!= PACKET_DISABLE
)
9260 struct remote_state
*rs
= get_remote_state ();
9262 char *endp
= rs
->buf
+ get_remote_packet_size ();
9263 enum packet_result result
;
9265 strcpy (p
, "qGetTLSAddr:");
9267 p
= write_ptid (p
, endp
, ptid
);
9269 p
+= hexnumstr (p
, offset
);
9271 p
+= hexnumstr (p
, lm
);
9275 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9276 result
= packet_ok (rs
->buf
,
9277 &remote_protocol_packets
[PACKET_qGetTLSAddr
]);
9278 if (result
== PACKET_OK
)
9282 unpack_varlen_hex (rs
->buf
, &result
);
9285 else if (result
== PACKET_UNKNOWN
)
9286 throw_error (TLS_GENERIC_ERROR
,
9287 _("Remote target doesn't support qGetTLSAddr packet"));
9289 throw_error (TLS_GENERIC_ERROR
,
9290 _("Remote target failed to process qGetTLSAddr request"));
9293 throw_error (TLS_GENERIC_ERROR
,
9294 _("TLS not supported or disabled on this target"));
9299 /* Provide thread local base, i.e. Thread Information Block address.
9300 Returns 1 if ptid is found and thread_local_base is non zero. */
9303 remote_get_tib_address (ptid_t ptid
, CORE_ADDR
*addr
)
9305 if (remote_protocol_packets
[PACKET_qGetTIBAddr
].support
!= PACKET_DISABLE
)
9307 struct remote_state
*rs
= get_remote_state ();
9309 char *endp
= rs
->buf
+ get_remote_packet_size ();
9310 enum packet_result result
;
9312 strcpy (p
, "qGetTIBAddr:");
9314 p
= write_ptid (p
, endp
, ptid
);
9318 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9319 result
= packet_ok (rs
->buf
,
9320 &remote_protocol_packets
[PACKET_qGetTIBAddr
]);
9321 if (result
== PACKET_OK
)
9325 unpack_varlen_hex (rs
->buf
, &result
);
9327 *addr
= (CORE_ADDR
) result
;
9330 else if (result
== PACKET_UNKNOWN
)
9331 error (_("Remote target doesn't support qGetTIBAddr packet"));
9333 error (_("Remote target failed to process qGetTIBAddr request"));
9336 error (_("qGetTIBAddr not supported or disabled on this target"));
9341 /* Support for inferring a target description based on the current
9342 architecture and the size of a 'g' packet. While the 'g' packet
9343 can have any size (since optional registers can be left off the
9344 end), some sizes are easily recognizable given knowledge of the
9345 approximate architecture. */
9347 struct remote_g_packet_guess
9350 const struct target_desc
*tdesc
;
9352 typedef struct remote_g_packet_guess remote_g_packet_guess_s
;
9353 DEF_VEC_O(remote_g_packet_guess_s
);
9355 struct remote_g_packet_data
9357 VEC(remote_g_packet_guess_s
) *guesses
;
9360 static struct gdbarch_data
*remote_g_packet_data_handle
;
9363 remote_g_packet_data_init (struct obstack
*obstack
)
9365 return OBSTACK_ZALLOC (obstack
, struct remote_g_packet_data
);
9369 register_remote_g_packet_guess (struct gdbarch
*gdbarch
, int bytes
,
9370 const struct target_desc
*tdesc
)
9372 struct remote_g_packet_data
*data
9373 = gdbarch_data (gdbarch
, remote_g_packet_data_handle
);
9374 struct remote_g_packet_guess new_guess
, *guess
;
9377 gdb_assert (tdesc
!= NULL
);
9380 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
9382 if (guess
->bytes
== bytes
)
9383 internal_error (__FILE__
, __LINE__
,
9384 _("Duplicate g packet description added for size %d"),
9387 new_guess
.bytes
= bytes
;
9388 new_guess
.tdesc
= tdesc
;
9389 VEC_safe_push (remote_g_packet_guess_s
, data
->guesses
, &new_guess
);
9392 /* Return 1 if remote_read_description would do anything on this target
9393 and architecture, 0 otherwise. */
9396 remote_read_description_p (struct target_ops
*target
)
9398 struct remote_g_packet_data
*data
9399 = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
);
9401 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
9407 static const struct target_desc
*
9408 remote_read_description (struct target_ops
*target
)
9410 struct remote_g_packet_data
*data
9411 = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
);
9413 /* Do not try this during initial connection, when we do not know
9414 whether there is a running but stopped thread. */
9415 if (!target_has_execution
|| ptid_equal (inferior_ptid
, null_ptid
))
9418 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
9420 struct remote_g_packet_guess
*guess
;
9422 int bytes
= send_g_packet ();
9425 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
9427 if (guess
->bytes
== bytes
)
9428 return guess
->tdesc
;
9430 /* We discard the g packet. A minor optimization would be to
9431 hold on to it, and fill the register cache once we have selected
9432 an architecture, but it's too tricky to do safely. */
9438 /* Remote file transfer support. This is host-initiated I/O, not
9439 target-initiated; for target-initiated, see remote-fileio.c. */
9441 /* If *LEFT is at least the length of STRING, copy STRING to
9442 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9443 decrease *LEFT. Otherwise raise an error. */
9446 remote_buffer_add_string (char **buffer
, int *left
, char *string
)
9448 int len
= strlen (string
);
9451 error (_("Packet too long for target."));
9453 memcpy (*buffer
, string
, len
);
9457 /* NUL-terminate the buffer as a convenience, if there is
9463 /* If *LEFT is large enough, hex encode LEN bytes from BYTES into
9464 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9465 decrease *LEFT. Otherwise raise an error. */
9468 remote_buffer_add_bytes (char **buffer
, int *left
, const gdb_byte
*bytes
,
9471 if (2 * len
> *left
)
9472 error (_("Packet too long for target."));
9474 bin2hex (bytes
, *buffer
, len
);
9478 /* NUL-terminate the buffer as a convenience, if there is
9484 /* If *LEFT is large enough, convert VALUE to hex and add it to
9485 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9486 decrease *LEFT. Otherwise raise an error. */
9489 remote_buffer_add_int (char **buffer
, int *left
, ULONGEST value
)
9491 int len
= hexnumlen (value
);
9494 error (_("Packet too long for target."));
9496 hexnumstr (*buffer
, value
);
9500 /* NUL-terminate the buffer as a convenience, if there is
9506 /* Parse an I/O result packet from BUFFER. Set RETCODE to the return
9507 value, *REMOTE_ERRNO to the remote error number or zero if none
9508 was included, and *ATTACHMENT to point to the start of the annex
9509 if any. The length of the packet isn't needed here; there may
9510 be NUL bytes in BUFFER, but they will be after *ATTACHMENT.
9512 Return 0 if the packet could be parsed, -1 if it could not. If
9513 -1 is returned, the other variables may not be initialized. */
9516 remote_hostio_parse_result (char *buffer
, int *retcode
,
9517 int *remote_errno
, char **attachment
)
9524 if (buffer
[0] != 'F')
9528 *retcode
= strtol (&buffer
[1], &p
, 16);
9529 if (errno
!= 0 || p
== &buffer
[1])
9532 /* Check for ",errno". */
9536 *remote_errno
= strtol (p
+ 1, &p2
, 16);
9537 if (errno
!= 0 || p
+ 1 == p2
)
9542 /* Check for ";attachment". If there is no attachment, the
9543 packet should end here. */
9546 *attachment
= p
+ 1;
9549 else if (*p
== '\0')
9555 /* Send a prepared I/O packet to the target and read its response.
9556 The prepared packet is in the global RS->BUF before this function
9557 is called, and the answer is there when we return.
9559 COMMAND_BYTES is the length of the request to send, which may include
9560 binary data. WHICH_PACKET is the packet configuration to check
9561 before attempting a packet. If an error occurs, *REMOTE_ERRNO
9562 is set to the error number and -1 is returned. Otherwise the value
9563 returned by the function is returned.
9565 ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an
9566 attachment is expected; an error will be reported if there's a
9567 mismatch. If one is found, *ATTACHMENT will be set to point into
9568 the packet buffer and *ATTACHMENT_LEN will be set to the
9569 attachment's length. */
9572 remote_hostio_send_command (int command_bytes
, int which_packet
,
9573 int *remote_errno
, char **attachment
,
9574 int *attachment_len
)
9576 struct remote_state
*rs
= get_remote_state ();
9577 int ret
, bytes_read
;
9578 char *attachment_tmp
;
9581 || remote_protocol_packets
[which_packet
].support
== PACKET_DISABLE
)
9583 *remote_errno
= FILEIO_ENOSYS
;
9587 putpkt_binary (rs
->buf
, command_bytes
);
9588 bytes_read
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
9590 /* If it timed out, something is wrong. Don't try to parse the
9594 *remote_errno
= FILEIO_EINVAL
;
9598 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[which_packet
]))
9601 *remote_errno
= FILEIO_EINVAL
;
9603 case PACKET_UNKNOWN
:
9604 *remote_errno
= FILEIO_ENOSYS
;
9610 if (remote_hostio_parse_result (rs
->buf
, &ret
, remote_errno
,
9613 *remote_errno
= FILEIO_EINVAL
;
9617 /* Make sure we saw an attachment if and only if we expected one. */
9618 if ((attachment_tmp
== NULL
&& attachment
!= NULL
)
9619 || (attachment_tmp
!= NULL
&& attachment
== NULL
))
9621 *remote_errno
= FILEIO_EINVAL
;
9625 /* If an attachment was found, it must point into the packet buffer;
9626 work out how many bytes there were. */
9627 if (attachment_tmp
!= NULL
)
9629 *attachment
= attachment_tmp
;
9630 *attachment_len
= bytes_read
- (*attachment
- rs
->buf
);
9636 /* Open FILENAME on the remote target, using FLAGS and MODE. Return a
9637 remote file descriptor, or -1 if an error occurs (and set
9641 remote_hostio_open (const char *filename
, int flags
, int mode
,
9644 struct remote_state
*rs
= get_remote_state ();
9646 int left
= get_remote_packet_size () - 1;
9648 remote_buffer_add_string (&p
, &left
, "vFile:open:");
9650 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9652 remote_buffer_add_string (&p
, &left
, ",");
9654 remote_buffer_add_int (&p
, &left
, flags
);
9655 remote_buffer_add_string (&p
, &left
, ",");
9657 remote_buffer_add_int (&p
, &left
, mode
);
9659 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_open
,
9660 remote_errno
, NULL
, NULL
);
9663 /* Write up to LEN bytes from WRITE_BUF to FD on the remote target.
9664 Return the number of bytes written, or -1 if an error occurs (and
9665 set *REMOTE_ERRNO). */
9668 remote_hostio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
9669 ULONGEST offset
, int *remote_errno
)
9671 struct remote_state
*rs
= get_remote_state ();
9673 int left
= get_remote_packet_size ();
9676 remote_buffer_add_string (&p
, &left
, "vFile:pwrite:");
9678 remote_buffer_add_int (&p
, &left
, fd
);
9679 remote_buffer_add_string (&p
, &left
, ",");
9681 remote_buffer_add_int (&p
, &left
, offset
);
9682 remote_buffer_add_string (&p
, &left
, ",");
9684 p
+= remote_escape_output (write_buf
, len
, p
, &out_len
,
9685 get_remote_packet_size () - (p
- rs
->buf
));
9687 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pwrite
,
9688 remote_errno
, NULL
, NULL
);
9691 /* Read up to LEN bytes FD on the remote target into READ_BUF
9692 Return the number of bytes read, or -1 if an error occurs (and
9693 set *REMOTE_ERRNO). */
9696 remote_hostio_pread (int fd
, gdb_byte
*read_buf
, int len
,
9697 ULONGEST offset
, int *remote_errno
)
9699 struct remote_state
*rs
= get_remote_state ();
9702 int left
= get_remote_packet_size ();
9703 int ret
, attachment_len
;
9706 remote_buffer_add_string (&p
, &left
, "vFile:pread:");
9708 remote_buffer_add_int (&p
, &left
, fd
);
9709 remote_buffer_add_string (&p
, &left
, ",");
9711 remote_buffer_add_int (&p
, &left
, len
);
9712 remote_buffer_add_string (&p
, &left
, ",");
9714 remote_buffer_add_int (&p
, &left
, offset
);
9716 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pread
,
9717 remote_errno
, &attachment
,
9723 read_len
= remote_unescape_input (attachment
, attachment_len
,
9725 if (read_len
!= ret
)
9726 error (_("Read returned %d, but %d bytes."), ret
, (int) read_len
);
9731 /* Close FD on the remote target. Return 0, or -1 if an error occurs
9732 (and set *REMOTE_ERRNO). */
9735 remote_hostio_close (int fd
, int *remote_errno
)
9737 struct remote_state
*rs
= get_remote_state ();
9739 int left
= get_remote_packet_size () - 1;
9741 remote_buffer_add_string (&p
, &left
, "vFile:close:");
9743 remote_buffer_add_int (&p
, &left
, fd
);
9745 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_close
,
9746 remote_errno
, NULL
, NULL
);
9749 /* Unlink FILENAME on the remote target. Return 0, or -1 if an error
9750 occurs (and set *REMOTE_ERRNO). */
9753 remote_hostio_unlink (const char *filename
, int *remote_errno
)
9755 struct remote_state
*rs
= get_remote_state ();
9757 int left
= get_remote_packet_size () - 1;
9759 remote_buffer_add_string (&p
, &left
, "vFile:unlink:");
9761 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9764 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_unlink
,
9765 remote_errno
, NULL
, NULL
);
9768 /* Read value of symbolic link FILENAME on the remote target. Return
9769 a null-terminated string allocated via xmalloc, or NULL if an error
9770 occurs (and set *REMOTE_ERRNO). */
9773 remote_hostio_readlink (const char *filename
, int *remote_errno
)
9775 struct remote_state
*rs
= get_remote_state ();
9778 int left
= get_remote_packet_size ();
9779 int len
, attachment_len
;
9783 remote_buffer_add_string (&p
, &left
, "vFile:readlink:");
9785 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9788 len
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_readlink
,
9789 remote_errno
, &attachment
,
9795 ret
= xmalloc (len
+ 1);
9797 read_len
= remote_unescape_input (attachment
, attachment_len
,
9799 if (read_len
!= len
)
9800 error (_("Readlink returned %d, but %d bytes."), len
, read_len
);
9807 remote_fileio_errno_to_host (int errnum
)
9831 case FILEIO_ENOTDIR
:
9851 case FILEIO_ENAMETOOLONG
:
9852 return ENAMETOOLONG
;
9858 remote_hostio_error (int errnum
)
9860 int host_error
= remote_fileio_errno_to_host (errnum
);
9862 if (host_error
== -1)
9863 error (_("Unknown remote I/O error %d"), errnum
);
9865 error (_("Remote I/O error: %s"), safe_strerror (host_error
));
9869 remote_hostio_close_cleanup (void *opaque
)
9871 int fd
= *(int *) opaque
;
9874 remote_hostio_close (fd
, &remote_errno
);
9879 remote_bfd_iovec_open (struct bfd
*abfd
, void *open_closure
)
9881 const char *filename
= bfd_get_filename (abfd
);
9882 int fd
, remote_errno
;
9885 gdb_assert (remote_filename_p (filename
));
9887 fd
= remote_hostio_open (filename
+ 7, FILEIO_O_RDONLY
, 0, &remote_errno
);
9890 errno
= remote_fileio_errno_to_host (remote_errno
);
9891 bfd_set_error (bfd_error_system_call
);
9895 stream
= xmalloc (sizeof (int));
9901 remote_bfd_iovec_close (struct bfd
*abfd
, void *stream
)
9903 int fd
= *(int *)stream
;
9908 /* Ignore errors on close; these may happen if the remote
9909 connection was already torn down. */
9910 remote_hostio_close (fd
, &remote_errno
);
9916 remote_bfd_iovec_pread (struct bfd
*abfd
, void *stream
, void *buf
,
9917 file_ptr nbytes
, file_ptr offset
)
9919 int fd
= *(int *)stream
;
9921 file_ptr pos
, bytes
;
9924 while (nbytes
> pos
)
9926 bytes
= remote_hostio_pread (fd
, (char *)buf
+ pos
, nbytes
- pos
,
9927 offset
+ pos
, &remote_errno
);
9929 /* Success, but no bytes, means end-of-file. */
9933 errno
= remote_fileio_errno_to_host (remote_errno
);
9934 bfd_set_error (bfd_error_system_call
);
9945 remote_bfd_iovec_stat (struct bfd
*abfd
, void *stream
, struct stat
*sb
)
9947 /* FIXME: We should probably implement remote_hostio_stat. */
9948 sb
->st_size
= INT_MAX
;
9953 remote_filename_p (const char *filename
)
9955 return strncmp (filename
, "remote:", 7) == 0;
9959 remote_bfd_open (const char *remote_file
, const char *target
)
9961 bfd
*abfd
= gdb_bfd_openr_iovec (remote_file
, target
,
9962 remote_bfd_iovec_open
, NULL
,
9963 remote_bfd_iovec_pread
,
9964 remote_bfd_iovec_close
,
9965 remote_bfd_iovec_stat
);
9971 remote_file_put (const char *local_file
, const char *remote_file
, int from_tty
)
9973 struct cleanup
*back_to
, *close_cleanup
;
9974 int retcode
, fd
, remote_errno
, bytes
, io_size
;
9977 int bytes_in_buffer
;
9982 error (_("command can only be used with remote target"));
9984 file
= fopen (local_file
, "rb");
9986 perror_with_name (local_file
);
9987 back_to
= make_cleanup_fclose (file
);
9989 fd
= remote_hostio_open (remote_file
, (FILEIO_O_WRONLY
| FILEIO_O_CREAT
9991 0700, &remote_errno
);
9993 remote_hostio_error (remote_errno
);
9995 /* Send up to this many bytes at once. They won't all fit in the
9996 remote packet limit, so we'll transfer slightly fewer. */
9997 io_size
= get_remote_packet_size ();
9998 buffer
= xmalloc (io_size
);
9999 make_cleanup (xfree
, buffer
);
10001 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
10003 bytes_in_buffer
= 0;
10006 while (bytes_in_buffer
|| !saw_eof
)
10010 bytes
= fread (buffer
+ bytes_in_buffer
, 1,
10011 io_size
- bytes_in_buffer
,
10016 error (_("Error reading %s."), local_file
);
10019 /* EOF. Unless there is something still in the
10020 buffer from the last iteration, we are done. */
10022 if (bytes_in_buffer
== 0)
10030 bytes
+= bytes_in_buffer
;
10031 bytes_in_buffer
= 0;
10033 retcode
= remote_hostio_pwrite (fd
, buffer
, bytes
,
10034 offset
, &remote_errno
);
10037 remote_hostio_error (remote_errno
);
10038 else if (retcode
== 0)
10039 error (_("Remote write of %d bytes returned 0!"), bytes
);
10040 else if (retcode
< bytes
)
10042 /* Short write. Save the rest of the read data for the next
10044 bytes_in_buffer
= bytes
- retcode
;
10045 memmove (buffer
, buffer
+ retcode
, bytes_in_buffer
);
10051 discard_cleanups (close_cleanup
);
10052 if (remote_hostio_close (fd
, &remote_errno
))
10053 remote_hostio_error (remote_errno
);
10056 printf_filtered (_("Successfully sent file \"%s\".\n"), local_file
);
10057 do_cleanups (back_to
);
10061 remote_file_get (const char *remote_file
, const char *local_file
, int from_tty
)
10063 struct cleanup
*back_to
, *close_cleanup
;
10064 int fd
, remote_errno
, bytes
, io_size
;
10070 error (_("command can only be used with remote target"));
10072 fd
= remote_hostio_open (remote_file
, FILEIO_O_RDONLY
, 0, &remote_errno
);
10074 remote_hostio_error (remote_errno
);
10076 file
= fopen (local_file
, "wb");
10078 perror_with_name (local_file
);
10079 back_to
= make_cleanup_fclose (file
);
10081 /* Send up to this many bytes at once. They won't all fit in the
10082 remote packet limit, so we'll transfer slightly fewer. */
10083 io_size
= get_remote_packet_size ();
10084 buffer
= xmalloc (io_size
);
10085 make_cleanup (xfree
, buffer
);
10087 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
10092 bytes
= remote_hostio_pread (fd
, buffer
, io_size
, offset
, &remote_errno
);
10094 /* Success, but no bytes, means end-of-file. */
10097 remote_hostio_error (remote_errno
);
10101 bytes
= fwrite (buffer
, 1, bytes
, file
);
10103 perror_with_name (local_file
);
10106 discard_cleanups (close_cleanup
);
10107 if (remote_hostio_close (fd
, &remote_errno
))
10108 remote_hostio_error (remote_errno
);
10111 printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file
);
10112 do_cleanups (back_to
);
10116 remote_file_delete (const char *remote_file
, int from_tty
)
10118 int retcode
, remote_errno
;
10121 error (_("command can only be used with remote target"));
10123 retcode
= remote_hostio_unlink (remote_file
, &remote_errno
);
10125 remote_hostio_error (remote_errno
);
10128 printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file
);
10132 remote_put_command (char *args
, int from_tty
)
10134 struct cleanup
*back_to
;
10138 error_no_arg (_("file to put"));
10140 argv
= gdb_buildargv (args
);
10141 back_to
= make_cleanup_freeargv (argv
);
10142 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
10143 error (_("Invalid parameters to remote put"));
10145 remote_file_put (argv
[0], argv
[1], from_tty
);
10147 do_cleanups (back_to
);
10151 remote_get_command (char *args
, int from_tty
)
10153 struct cleanup
*back_to
;
10157 error_no_arg (_("file to get"));
10159 argv
= gdb_buildargv (args
);
10160 back_to
= make_cleanup_freeargv (argv
);
10161 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
10162 error (_("Invalid parameters to remote get"));
10164 remote_file_get (argv
[0], argv
[1], from_tty
);
10166 do_cleanups (back_to
);
10170 remote_delete_command (char *args
, int from_tty
)
10172 struct cleanup
*back_to
;
10176 error_no_arg (_("file to delete"));
10178 argv
= gdb_buildargv (args
);
10179 back_to
= make_cleanup_freeargv (argv
);
10180 if (argv
[0] == NULL
|| argv
[1] != NULL
)
10181 error (_("Invalid parameters to remote delete"));
10183 remote_file_delete (argv
[0], from_tty
);
10185 do_cleanups (back_to
);
10189 remote_command (char *args
, int from_tty
)
10191 help_list (remote_cmdlist
, "remote ", -1, gdb_stdout
);
10195 remote_can_execute_reverse (void)
10197 if (remote_protocol_packets
[PACKET_bs
].support
== PACKET_ENABLE
10198 || remote_protocol_packets
[PACKET_bc
].support
== PACKET_ENABLE
)
10205 remote_supports_non_stop (void)
10211 remote_supports_disable_randomization (void)
10213 /* Only supported in extended mode. */
10218 remote_supports_multi_process (void)
10220 struct remote_state
*rs
= get_remote_state ();
10222 /* Only extended-remote handles being attached to multiple
10223 processes, even though plain remote can use the multi-process
10224 thread id extensions, so that GDB knows the target process's
10226 return rs
->extended
&& remote_multi_process_p (rs
);
10230 remote_supports_cond_tracepoints (void)
10232 struct remote_state
*rs
= get_remote_state ();
10234 return rs
->cond_tracepoints
;
10238 remote_supports_cond_breakpoints (void)
10240 struct remote_state
*rs
= get_remote_state ();
10242 return rs
->cond_breakpoints
;
10246 remote_supports_fast_tracepoints (void)
10248 struct remote_state
*rs
= get_remote_state ();
10250 return rs
->fast_tracepoints
;
10254 remote_supports_static_tracepoints (void)
10256 struct remote_state
*rs
= get_remote_state ();
10258 return rs
->static_tracepoints
;
10262 remote_supports_install_in_trace (void)
10264 struct remote_state
*rs
= get_remote_state ();
10266 return rs
->install_in_trace
;
10270 remote_supports_enable_disable_tracepoint (void)
10272 struct remote_state
*rs
= get_remote_state ();
10274 return rs
->enable_disable_tracepoints
;
10278 remote_supports_string_tracing (void)
10280 struct remote_state
*rs
= get_remote_state ();
10282 return rs
->string_tracing
;
10286 remote_can_run_breakpoint_commands (void)
10288 struct remote_state
*rs
= get_remote_state ();
10290 return rs
->breakpoint_commands
;
10294 remote_trace_init (void)
10297 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10298 if (strcmp (target_buf
, "OK") != 0)
10299 error (_("Target does not support this command."));
10302 static void free_actions_list (char **actions_list
);
10303 static void free_actions_list_cleanup_wrapper (void *);
10305 free_actions_list_cleanup_wrapper (void *al
)
10307 free_actions_list (al
);
10311 free_actions_list (char **actions_list
)
10315 if (actions_list
== 0)
10318 for (ndx
= 0; actions_list
[ndx
]; ndx
++)
10319 xfree (actions_list
[ndx
]);
10321 xfree (actions_list
);
10324 /* Recursive routine to walk through command list including loops, and
10325 download packets for each command. */
10328 remote_download_command_source (int num
, ULONGEST addr
,
10329 struct command_line
*cmds
)
10331 struct remote_state
*rs
= get_remote_state ();
10332 struct command_line
*cmd
;
10334 for (cmd
= cmds
; cmd
; cmd
= cmd
->next
)
10336 QUIT
; /* Allow user to bail out with ^C. */
10337 strcpy (rs
->buf
, "QTDPsrc:");
10338 encode_source_string (num
, addr
, "cmd", cmd
->line
,
10339 rs
->buf
+ strlen (rs
->buf
),
10340 rs
->buf_size
- strlen (rs
->buf
));
10342 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10343 if (strcmp (target_buf
, "OK"))
10344 warning (_("Target does not support source download."));
10346 if (cmd
->control_type
== while_control
10347 || cmd
->control_type
== while_stepping_control
)
10349 remote_download_command_source (num
, addr
, *cmd
->body_list
);
10351 QUIT
; /* Allow user to bail out with ^C. */
10352 strcpy (rs
->buf
, "QTDPsrc:");
10353 encode_source_string (num
, addr
, "cmd", "end",
10354 rs
->buf
+ strlen (rs
->buf
),
10355 rs
->buf_size
- strlen (rs
->buf
));
10357 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10358 if (strcmp (target_buf
, "OK"))
10359 warning (_("Target does not support source download."));
10365 remote_download_tracepoint (struct bp_location
*loc
)
10367 #define BUF_SIZE 2048
10371 char buf
[BUF_SIZE
];
10372 char **tdp_actions
;
10373 char **stepping_actions
;
10375 struct cleanup
*old_chain
= NULL
;
10376 struct agent_expr
*aexpr
;
10377 struct cleanup
*aexpr_chain
= NULL
;
10379 struct breakpoint
*b
= loc
->owner
;
10380 struct tracepoint
*t
= (struct tracepoint
*) b
;
10382 encode_actions (loc
->owner
, loc
, &tdp_actions
, &stepping_actions
);
10383 old_chain
= make_cleanup (free_actions_list_cleanup_wrapper
,
10385 (void) make_cleanup (free_actions_list_cleanup_wrapper
,
10388 tpaddr
= loc
->address
;
10389 sprintf_vma (addrbuf
, tpaddr
);
10390 xsnprintf (buf
, BUF_SIZE
, "QTDP:%x:%s:%c:%lx:%x", b
->number
,
10391 addrbuf
, /* address */
10392 (b
->enable_state
== bp_enabled
? 'E' : 'D'),
10393 t
->step_count
, t
->pass_count
);
10394 /* Fast tracepoints are mostly handled by the target, but we can
10395 tell the target how big of an instruction block should be moved
10397 if (b
->type
== bp_fast_tracepoint
)
10399 /* Only test for support at download time; we may not know
10400 target capabilities at definition time. */
10401 if (remote_supports_fast_tracepoints ())
10405 if (gdbarch_fast_tracepoint_valid_at (target_gdbarch (),
10406 tpaddr
, &isize
, NULL
))
10407 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":F%x",
10410 /* If it passed validation at definition but fails now,
10411 something is very wrong. */
10412 internal_error (__FILE__
, __LINE__
,
10413 _("Fast tracepoint not "
10414 "valid during download"));
10417 /* Fast tracepoints are functionally identical to regular
10418 tracepoints, so don't take lack of support as a reason to
10419 give up on the trace run. */
10420 warning (_("Target does not support fast tracepoints, "
10421 "downloading %d as regular tracepoint"), b
->number
);
10423 else if (b
->type
== bp_static_tracepoint
)
10425 /* Only test for support at download time; we may not know
10426 target capabilities at definition time. */
10427 if (remote_supports_static_tracepoints ())
10429 struct static_tracepoint_marker marker
;
10431 if (target_static_tracepoint_marker_at (tpaddr
, &marker
))
10432 strcat (buf
, ":S");
10434 error (_("Static tracepoint not valid during download"));
10437 /* Fast tracepoints are functionally identical to regular
10438 tracepoints, so don't take lack of support as a reason
10439 to give up on the trace run. */
10440 error (_("Target does not support static tracepoints"));
10442 /* If the tracepoint has a conditional, make it into an agent
10443 expression and append to the definition. */
10446 /* Only test support at download time, we may not know target
10447 capabilities at definition time. */
10448 if (remote_supports_cond_tracepoints ())
10450 aexpr
= gen_eval_for_expr (tpaddr
, loc
->cond
);
10451 aexpr_chain
= make_cleanup_free_agent_expr (aexpr
);
10452 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":X%x,",
10454 pkt
= buf
+ strlen (buf
);
10455 for (ndx
= 0; ndx
< aexpr
->len
; ++ndx
)
10456 pkt
= pack_hex_byte (pkt
, aexpr
->buf
[ndx
]);
10458 do_cleanups (aexpr_chain
);
10461 warning (_("Target does not support conditional tracepoints, "
10462 "ignoring tp %d cond"), b
->number
);
10465 if (b
->commands
|| *default_collect
)
10468 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10469 if (strcmp (target_buf
, "OK"))
10470 error (_("Target does not support tracepoints."));
10472 /* do_single_steps (t); */
10475 for (ndx
= 0; tdp_actions
[ndx
]; ndx
++)
10477 QUIT
; /* Allow user to bail out with ^C. */
10478 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%c",
10479 b
->number
, addrbuf
, /* address */
10481 ((tdp_actions
[ndx
+ 1] || stepping_actions
)
10484 remote_get_noisy_reply (&target_buf
,
10486 if (strcmp (target_buf
, "OK"))
10487 error (_("Error on target while setting tracepoints."));
10490 if (stepping_actions
)
10492 for (ndx
= 0; stepping_actions
[ndx
]; ndx
++)
10494 QUIT
; /* Allow user to bail out with ^C. */
10495 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%s%s",
10496 b
->number
, addrbuf
, /* address */
10497 ((ndx
== 0) ? "S" : ""),
10498 stepping_actions
[ndx
],
10499 (stepping_actions
[ndx
+ 1] ? "-" : ""));
10501 remote_get_noisy_reply (&target_buf
,
10503 if (strcmp (target_buf
, "OK"))
10504 error (_("Error on target while setting tracepoints."));
10508 if (remote_protocol_packets
[PACKET_TracepointSource
].support
10511 if (b
->addr_string
)
10513 strcpy (buf
, "QTDPsrc:");
10514 encode_source_string (b
->number
, loc
->address
,
10515 "at", b
->addr_string
, buf
+ strlen (buf
),
10516 2048 - strlen (buf
));
10519 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10520 if (strcmp (target_buf
, "OK"))
10521 warning (_("Target does not support source download."));
10523 if (b
->cond_string
)
10525 strcpy (buf
, "QTDPsrc:");
10526 encode_source_string (b
->number
, loc
->address
,
10527 "cond", b
->cond_string
, buf
+ strlen (buf
),
10528 2048 - strlen (buf
));
10530 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10531 if (strcmp (target_buf
, "OK"))
10532 warning (_("Target does not support source download."));
10534 remote_download_command_source (b
->number
, loc
->address
,
10535 breakpoint_commands (b
));
10538 do_cleanups (old_chain
);
10542 remote_can_download_tracepoint (void)
10544 struct remote_state
*rs
= get_remote_state ();
10545 struct trace_status
*ts
;
10548 /* Don't try to install tracepoints until we've relocated our
10549 symbols, and fetched and merged the target's tracepoint list with
10551 if (rs
->starting_up
)
10554 ts
= current_trace_status ();
10555 status
= remote_get_trace_status (ts
);
10557 if (status
== -1 || !ts
->running_known
|| !ts
->running
)
10560 /* If we are in a tracing experiment, but remote stub doesn't support
10561 installing tracepoint in trace, we have to return. */
10562 if (!remote_supports_install_in_trace ())
10570 remote_download_trace_state_variable (struct trace_state_variable
*tsv
)
10572 struct remote_state
*rs
= get_remote_state ();
10575 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDV:%x:%s:%x:",
10576 tsv
->number
, phex ((ULONGEST
) tsv
->initial_value
, 8),
10578 p
= rs
->buf
+ strlen (rs
->buf
);
10579 if ((p
- rs
->buf
) + strlen (tsv
->name
) * 2 >= get_remote_packet_size ())
10580 error (_("Trace state variable name too long for tsv definition packet"));
10581 p
+= 2 * bin2hex ((gdb_byte
*) (tsv
->name
), p
, 0);
10584 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10585 if (*target_buf
== '\0')
10586 error (_("Target does not support this command."));
10587 if (strcmp (target_buf
, "OK") != 0)
10588 error (_("Error on target while downloading trace state variable."));
10592 remote_enable_tracepoint (struct bp_location
*location
)
10594 struct remote_state
*rs
= get_remote_state ();
10597 sprintf_vma (addr_buf
, location
->address
);
10598 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTEnable:%x:%s",
10599 location
->owner
->number
, addr_buf
);
10601 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
10602 if (*rs
->buf
== '\0')
10603 error (_("Target does not support enabling tracepoints while a trace run is ongoing."));
10604 if (strcmp (rs
->buf
, "OK") != 0)
10605 error (_("Error on target while enabling tracepoint."));
10609 remote_disable_tracepoint (struct bp_location
*location
)
10611 struct remote_state
*rs
= get_remote_state ();
10614 sprintf_vma (addr_buf
, location
->address
);
10615 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisable:%x:%s",
10616 location
->owner
->number
, addr_buf
);
10618 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
10619 if (*rs
->buf
== '\0')
10620 error (_("Target does not support disabling tracepoints while a trace run is ongoing."));
10621 if (strcmp (rs
->buf
, "OK") != 0)
10622 error (_("Error on target while disabling tracepoint."));
10626 remote_trace_set_readonly_regions (void)
10630 bfd_size_type size
;
10636 return; /* No information to give. */
10638 strcpy (target_buf
, "QTro");
10639 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
10641 char tmp1
[40], tmp2
[40];
10644 if ((s
->flags
& SEC_LOAD
) == 0 ||
10645 /* (s->flags & SEC_CODE) == 0 || */
10646 (s
->flags
& SEC_READONLY
) == 0)
10650 vma
= bfd_get_section_vma (abfd
, s
);
10651 size
= bfd_get_section_size (s
);
10652 sprintf_vma (tmp1
, vma
);
10653 sprintf_vma (tmp2
, vma
+ size
);
10654 sec_length
= 1 + strlen (tmp1
) + 1 + strlen (tmp2
);
10655 if (offset
+ sec_length
+ 1 > target_buf_size
)
10657 if (remote_protocol_packets
[PACKET_qXfer_traceframe_info
].support
10660 Too many sections for read-only sections definition packet."));
10663 xsnprintf (target_buf
+ offset
, target_buf_size
- offset
, ":%s,%s",
10665 offset
+= sec_length
;
10669 putpkt (target_buf
);
10670 getpkt (&target_buf
, &target_buf_size
, 0);
10675 remote_trace_start (void)
10677 putpkt ("QTStart");
10678 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10679 if (*target_buf
== '\0')
10680 error (_("Target does not support this command."));
10681 if (strcmp (target_buf
, "OK") != 0)
10682 error (_("Bogus reply from target: %s"), target_buf
);
10686 remote_get_trace_status (struct trace_status
*ts
)
10688 /* Initialize it just to avoid a GCC false warning. */
10690 /* FIXME we need to get register block size some other way. */
10691 extern int trace_regblock_size
;
10692 volatile struct gdb_exception ex
;
10693 enum packet_result result
;
10695 if (remote_protocol_packets
[PACKET_qTStatus
].support
== PACKET_DISABLE
)
10698 trace_regblock_size
= get_remote_arch_state ()->sizeof_g_packet
;
10700 TRY_CATCH (ex
, RETURN_MASK_ERROR
)
10702 putpkt ("qTStatus");
10703 p
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10707 if (ex
.error
!= TARGET_CLOSE_ERROR
)
10709 exception_fprintf (gdb_stderr
, ex
, "qTStatus: ");
10712 throw_exception (ex
);
10715 result
= packet_ok (p
, &remote_protocol_packets
[PACKET_qTStatus
]);
10717 /* If the remote target doesn't do tracing, flag it. */
10718 if (result
== PACKET_UNKNOWN
)
10721 /* We're working with a live target. */
10722 ts
->filename
= NULL
;
10725 error (_("Bogus trace status reply from target: %s"), target_buf
);
10727 /* Function 'parse_trace_status' sets default value of each field of
10728 'ts' at first, so we don't have to do it here. */
10729 parse_trace_status (p
, ts
);
10731 return ts
->running
;
10735 remote_get_tracepoint_status (struct breakpoint
*bp
,
10736 struct uploaded_tp
*utp
)
10738 struct remote_state
*rs
= get_remote_state ();
10740 struct bp_location
*loc
;
10741 struct tracepoint
*tp
= (struct tracepoint
*) bp
;
10742 size_t size
= get_remote_packet_size ();
10746 tp
->base
.hit_count
= 0;
10747 tp
->traceframe_usage
= 0;
10748 for (loc
= tp
->base
.loc
; loc
; loc
= loc
->next
)
10750 /* If the tracepoint was never downloaded, don't go asking for
10752 if (tp
->number_on_target
== 0)
10754 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", tp
->number_on_target
,
10755 phex_nz (loc
->address
, 0));
10757 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10758 if (reply
&& *reply
)
10761 parse_tracepoint_status (reply
+ 1, bp
, utp
);
10767 utp
->hit_count
= 0;
10768 utp
->traceframe_usage
= 0;
10769 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", utp
->number
,
10770 phex_nz (utp
->addr
, 0));
10772 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10773 if (reply
&& *reply
)
10776 parse_tracepoint_status (reply
+ 1, bp
, utp
);
10782 remote_trace_stop (void)
10785 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10786 if (*target_buf
== '\0')
10787 error (_("Target does not support this command."));
10788 if (strcmp (target_buf
, "OK") != 0)
10789 error (_("Bogus reply from target: %s"), target_buf
);
10793 remote_trace_find (enum trace_find_type type
, int num
,
10794 ULONGEST addr1
, ULONGEST addr2
,
10797 struct remote_state
*rs
= get_remote_state ();
10798 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
10800 int target_frameno
= -1, target_tracept
= -1;
10802 /* Lookups other than by absolute frame number depend on the current
10803 trace selected, so make sure it is correct on the remote end
10805 if (type
!= tfind_number
)
10806 set_remote_traceframe ();
10809 strcpy (p
, "QTFrame:");
10810 p
= strchr (p
, '\0');
10814 xsnprintf (p
, endbuf
- p
, "%x", num
);
10817 xsnprintf (p
, endbuf
- p
, "pc:%s", phex_nz (addr1
, 0));
10820 xsnprintf (p
, endbuf
- p
, "tdp:%x", num
);
10823 xsnprintf (p
, endbuf
- p
, "range:%s:%s", phex_nz (addr1
, 0),
10824 phex_nz (addr2
, 0));
10826 case tfind_outside
:
10827 xsnprintf (p
, endbuf
- p
, "outside:%s:%s", phex_nz (addr1
, 0),
10828 phex_nz (addr2
, 0));
10831 error (_("Unknown trace find type %d"), type
);
10835 reply
= remote_get_noisy_reply (&(rs
->buf
), &sizeof_pkt
);
10836 if (*reply
== '\0')
10837 error (_("Target does not support this command."));
10839 while (reply
&& *reply
)
10844 target_frameno
= (int) strtol (p
, &reply
, 16);
10846 error (_("Unable to parse trace frame number"));
10847 /* Don't update our remote traceframe number cache on failure
10848 to select a remote traceframe. */
10849 if (target_frameno
== -1)
10854 target_tracept
= (int) strtol (p
, &reply
, 16);
10856 error (_("Unable to parse tracepoint number"));
10858 case 'O': /* "OK"? */
10859 if (reply
[1] == 'K' && reply
[2] == '\0')
10862 error (_("Bogus reply from target: %s"), reply
);
10865 error (_("Bogus reply from target: %s"), reply
);
10868 *tpp
= target_tracept
;
10870 remote_traceframe_number
= target_frameno
;
10871 return target_frameno
;
10875 remote_get_trace_state_variable_value (int tsvnum
, LONGEST
*val
)
10877 struct remote_state
*rs
= get_remote_state ();
10881 set_remote_traceframe ();
10883 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTV:%x", tsvnum
);
10885 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10886 if (reply
&& *reply
)
10890 unpack_varlen_hex (reply
+ 1, &uval
);
10891 *val
= (LONGEST
) uval
;
10899 remote_save_trace_data (const char *filename
)
10901 struct remote_state
*rs
= get_remote_state ();
10905 strcpy (p
, "QTSave:");
10907 if ((p
- rs
->buf
) + strlen (filename
) * 2 >= get_remote_packet_size ())
10908 error (_("Remote file name too long for trace save packet"));
10909 p
+= 2 * bin2hex ((gdb_byte
*) filename
, p
, 0);
10912 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10913 if (*reply
== '\0')
10914 error (_("Target does not support this command."));
10915 if (strcmp (reply
, "OK") != 0)
10916 error (_("Bogus reply from target: %s"), reply
);
10920 /* This is basically a memory transfer, but needs to be its own packet
10921 because we don't know how the target actually organizes its trace
10922 memory, plus we want to be able to ask for as much as possible, but
10923 not be unhappy if we don't get as much as we ask for. */
10926 remote_get_raw_trace_data (gdb_byte
*buf
, ULONGEST offset
, LONGEST len
)
10928 struct remote_state
*rs
= get_remote_state ();
10934 strcpy (p
, "qTBuffer:");
10936 p
+= hexnumstr (p
, offset
);
10938 p
+= hexnumstr (p
, len
);
10942 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10943 if (reply
&& *reply
)
10945 /* 'l' by itself means we're at the end of the buffer and
10946 there is nothing more to get. */
10950 /* Convert the reply into binary. Limit the number of bytes to
10951 convert according to our passed-in buffer size, rather than
10952 what was returned in the packet; if the target is
10953 unexpectedly generous and gives us a bigger reply than we
10954 asked for, we don't want to crash. */
10955 rslt
= hex2bin (target_buf
, buf
, len
);
10959 /* Something went wrong, flag as an error. */
10964 remote_set_disconnected_tracing (int val
)
10966 struct remote_state
*rs
= get_remote_state ();
10968 if (rs
->disconnected_tracing
)
10972 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisconnected:%x", val
);
10974 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10975 if (*reply
== '\0')
10976 error (_("Target does not support this command."));
10977 if (strcmp (reply
, "OK") != 0)
10978 error (_("Bogus reply from target: %s"), reply
);
10981 warning (_("Target does not support disconnected tracing."));
10985 remote_core_of_thread (struct target_ops
*ops
, ptid_t ptid
)
10987 struct thread_info
*info
= find_thread_ptid (ptid
);
10989 if (info
&& info
->private)
10990 return info
->private->core
;
10995 remote_set_circular_trace_buffer (int val
)
10997 struct remote_state
*rs
= get_remote_state ();
11000 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTBuffer:circular:%x", val
);
11002 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11003 if (*reply
== '\0')
11004 error (_("Target does not support this command."));
11005 if (strcmp (reply
, "OK") != 0)
11006 error (_("Bogus reply from target: %s"), reply
);
11009 static struct traceframe_info
*
11010 remote_traceframe_info (void)
11014 text
= target_read_stralloc (¤t_target
,
11015 TARGET_OBJECT_TRACEFRAME_INFO
, NULL
);
11018 struct traceframe_info
*info
;
11019 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
11021 info
= parse_traceframe_info (text
);
11022 do_cleanups (back_to
);
11029 /* Handle the qTMinFTPILen packet. Returns the minimum length of
11030 instruction on which a fast tracepoint may be placed. Returns -1
11031 if the packet is not supported, and 0 if the minimum instruction
11032 length is unknown. */
11035 remote_get_min_fast_tracepoint_insn_len (void)
11037 struct remote_state
*rs
= get_remote_state ();
11040 /* If we're not debugging a process yet, the IPA can't be
11042 if (!target_has_execution
)
11045 /* Make sure the remote is pointing at the right process. */
11046 set_general_process ();
11048 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTMinFTPILen");
11050 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11051 if (*reply
== '\0')
11055 ULONGEST min_insn_len
;
11057 unpack_varlen_hex (reply
, &min_insn_len
);
11059 return (int) min_insn_len
;
11064 remote_set_trace_buffer_size (LONGEST val
)
11066 if (remote_protocol_packets
[PACKET_QTBuffer_size
].support
11069 struct remote_state
*rs
= get_remote_state ();
11070 char *buf
= rs
->buf
;
11071 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11072 enum packet_result result
;
11074 gdb_assert (val
>= 0 || val
== -1);
11075 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTBuffer:size:");
11076 /* Send -1 as literal "-1" to avoid host size dependency. */
11080 buf
+= hexnumstr (buf
, (ULONGEST
) -val
);
11083 buf
+= hexnumstr (buf
, (ULONGEST
) val
);
11086 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
11087 result
= packet_ok (rs
->buf
,
11088 &remote_protocol_packets
[PACKET_QTBuffer_size
]);
11090 if (result
!= PACKET_OK
)
11091 warning (_("Bogus reply from target: %s"), rs
->buf
);
11096 remote_set_trace_notes (char *user
, char *notes
, char *stop_notes
)
11098 struct remote_state
*rs
= get_remote_state ();
11100 char *buf
= rs
->buf
;
11101 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11104 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTNotes:");
11107 buf
+= xsnprintf (buf
, endbuf
- buf
, "user:");
11108 nbytes
= bin2hex (user
, buf
, 0);
11114 buf
+= xsnprintf (buf
, endbuf
- buf
, "notes:");
11115 nbytes
= bin2hex (notes
, buf
, 0);
11121 buf
+= xsnprintf (buf
, endbuf
- buf
, "tstop:");
11122 nbytes
= bin2hex (stop_notes
, buf
, 0);
11126 /* Ensure the buffer is terminated. */
11130 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11131 if (*reply
== '\0')
11134 if (strcmp (reply
, "OK") != 0)
11135 error (_("Bogus reply from target: %s"), reply
);
11141 remote_use_agent (int use
)
11143 if (remote_protocol_packets
[PACKET_QAgent
].support
!= PACKET_DISABLE
)
11145 struct remote_state
*rs
= get_remote_state ();
11147 /* If the stub supports QAgent. */
11148 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAgent:%d", use
);
11150 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11152 if (strcmp (rs
->buf
, "OK") == 0)
11163 remote_can_use_agent (void)
11165 return (remote_protocol_packets
[PACKET_QAgent
].support
!= PACKET_DISABLE
);
11168 struct btrace_target_info
11170 /* The ptid of the traced thread. */
11174 /* Check whether the target supports branch tracing. */
11177 remote_supports_btrace (void)
11179 if (remote_protocol_packets
[PACKET_Qbtrace_off
].support
!= PACKET_ENABLE
)
11181 if (remote_protocol_packets
[PACKET_Qbtrace_bts
].support
!= PACKET_ENABLE
)
11183 if (remote_protocol_packets
[PACKET_qXfer_btrace
].support
!= PACKET_ENABLE
)
11189 /* Enable branch tracing. */
11191 static struct btrace_target_info
*
11192 remote_enable_btrace (ptid_t ptid
)
11194 struct btrace_target_info
*tinfo
= NULL
;
11195 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_Qbtrace_bts
];
11196 struct remote_state
*rs
= get_remote_state ();
11197 char *buf
= rs
->buf
;
11198 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11200 if (packet
->support
!= PACKET_ENABLE
)
11201 error (_("Target does not support branch tracing."));
11203 set_general_thread (ptid
);
11205 buf
+= xsnprintf (buf
, endbuf
- buf
, "%s", packet
->name
);
11207 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11209 if (packet_ok (rs
->buf
, packet
) == PACKET_ERROR
)
11211 if (rs
->buf
[0] == 'E' && rs
->buf
[1] == '.')
11212 error (_("Could not enable branch tracing for %s: %s"),
11213 target_pid_to_str (ptid
), rs
->buf
+ 2);
11215 error (_("Could not enable branch tracing for %s."),
11216 target_pid_to_str (ptid
));
11219 tinfo
= xzalloc (sizeof (*tinfo
));
11220 tinfo
->ptid
= ptid
;
11225 /* Disable branch tracing. */
11228 remote_disable_btrace (struct btrace_target_info
*tinfo
)
11230 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_Qbtrace_off
];
11231 struct remote_state
*rs
= get_remote_state ();
11232 char *buf
= rs
->buf
;
11233 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11235 if (packet
->support
!= PACKET_ENABLE
)
11236 error (_("Target does not support branch tracing."));
11238 set_general_thread (tinfo
->ptid
);
11240 buf
+= xsnprintf (buf
, endbuf
- buf
, "%s", packet
->name
);
11242 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11244 if (packet_ok (rs
->buf
, packet
) == PACKET_ERROR
)
11246 if (rs
->buf
[0] == 'E' && rs
->buf
[1] == '.')
11247 error (_("Could not disable branch tracing for %s: %s"),
11248 target_pid_to_str (tinfo
->ptid
), rs
->buf
+ 2);
11250 error (_("Could not disable branch tracing for %s."),
11251 target_pid_to_str (tinfo
->ptid
));
11257 /* Teardown branch tracing. */
11260 remote_teardown_btrace (struct btrace_target_info
*tinfo
)
11262 /* We must not talk to the target during teardown. */
11266 /* Read the branch trace. */
11268 static VEC (btrace_block_s
) *
11269 remote_read_btrace (struct btrace_target_info
*tinfo
,
11270 enum btrace_read_type type
)
11272 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_qXfer_btrace
];
11273 struct remote_state
*rs
= get_remote_state ();
11274 VEC (btrace_block_s
) *btrace
= NULL
;
11278 if (packet
->support
!= PACKET_ENABLE
)
11279 error (_("Target does not support branch tracing."));
11281 #if !defined(HAVE_LIBEXPAT)
11282 error (_("Cannot process branch tracing result. XML parsing not supported."));
11287 case btrace_read_all
:
11290 case btrace_read_new
:
11294 internal_error (__FILE__
, __LINE__
,
11295 _("Bad branch tracing read type: %u."),
11296 (unsigned int) type
);
11299 xml
= target_read_stralloc (¤t_target
,
11300 TARGET_OBJECT_BTRACE
, annex
);
11303 struct cleanup
*cleanup
= make_cleanup (xfree
, xml
);
11305 btrace
= parse_xml_btrace (xml
);
11306 do_cleanups (cleanup
);
11313 init_remote_ops (void)
11315 remote_ops
.to_shortname
= "remote";
11316 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
11317 remote_ops
.to_doc
=
11318 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
11319 Specify the serial device it is connected to\n\
11320 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
11321 remote_ops
.to_open
= remote_open
;
11322 remote_ops
.to_close
= remote_close
;
11323 remote_ops
.to_detach
= remote_detach
;
11324 remote_ops
.to_disconnect
= remote_disconnect
;
11325 remote_ops
.to_resume
= remote_resume
;
11326 remote_ops
.to_wait
= remote_wait
;
11327 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
11328 remote_ops
.to_store_registers
= remote_store_registers
;
11329 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
11330 remote_ops
.deprecated_xfer_memory
= remote_xfer_memory
;
11331 remote_ops
.to_files_info
= remote_files_info
;
11332 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
11333 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
11334 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
11335 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
11336 remote_ops
.to_watchpoint_addr_within_range
=
11337 remote_watchpoint_addr_within_range
;
11338 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
11339 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
11340 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
11341 remote_ops
.to_region_ok_for_hw_watchpoint
11342 = remote_region_ok_for_hw_watchpoint
;
11343 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
11344 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
11345 remote_ops
.to_kill
= remote_kill
;
11346 remote_ops
.to_load
= generic_load
;
11347 remote_ops
.to_mourn_inferior
= remote_mourn
;
11348 remote_ops
.to_pass_signals
= remote_pass_signals
;
11349 remote_ops
.to_program_signals
= remote_program_signals
;
11350 remote_ops
.to_thread_alive
= remote_thread_alive
;
11351 remote_ops
.to_find_new_threads
= remote_threads_info
;
11352 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
11353 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
11354 remote_ops
.to_get_ada_task_ptid
= remote_get_ada_task_ptid
;
11355 remote_ops
.to_stop
= remote_stop
;
11356 remote_ops
.to_xfer_partial
= remote_xfer_partial
;
11357 remote_ops
.to_rcmd
= remote_rcmd
;
11358 remote_ops
.to_log_command
= serial_log_command
;
11359 remote_ops
.to_get_thread_local_address
= remote_get_thread_local_address
;
11360 remote_ops
.to_stratum
= process_stratum
;
11361 remote_ops
.to_has_all_memory
= default_child_has_all_memory
;
11362 remote_ops
.to_has_memory
= default_child_has_memory
;
11363 remote_ops
.to_has_stack
= default_child_has_stack
;
11364 remote_ops
.to_has_registers
= default_child_has_registers
;
11365 remote_ops
.to_has_execution
= default_child_has_execution
;
11366 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
11367 remote_ops
.to_can_execute_reverse
= remote_can_execute_reverse
;
11368 remote_ops
.to_magic
= OPS_MAGIC
;
11369 remote_ops
.to_memory_map
= remote_memory_map
;
11370 remote_ops
.to_flash_erase
= remote_flash_erase
;
11371 remote_ops
.to_flash_done
= remote_flash_done
;
11372 remote_ops
.to_read_description
= remote_read_description
;
11373 remote_ops
.to_search_memory
= remote_search_memory
;
11374 remote_ops
.to_can_async_p
= remote_can_async_p
;
11375 remote_ops
.to_is_async_p
= remote_is_async_p
;
11376 remote_ops
.to_async
= remote_async
;
11377 remote_ops
.to_terminal_inferior
= remote_terminal_inferior
;
11378 remote_ops
.to_terminal_ours
= remote_terminal_ours
;
11379 remote_ops
.to_supports_non_stop
= remote_supports_non_stop
;
11380 remote_ops
.to_supports_multi_process
= remote_supports_multi_process
;
11381 remote_ops
.to_supports_disable_randomization
11382 = remote_supports_disable_randomization
;
11383 remote_ops
.to_fileio_open
= remote_hostio_open
;
11384 remote_ops
.to_fileio_pwrite
= remote_hostio_pwrite
;
11385 remote_ops
.to_fileio_pread
= remote_hostio_pread
;
11386 remote_ops
.to_fileio_close
= remote_hostio_close
;
11387 remote_ops
.to_fileio_unlink
= remote_hostio_unlink
;
11388 remote_ops
.to_fileio_readlink
= remote_hostio_readlink
;
11389 remote_ops
.to_supports_enable_disable_tracepoint
= remote_supports_enable_disable_tracepoint
;
11390 remote_ops
.to_supports_string_tracing
= remote_supports_string_tracing
;
11391 remote_ops
.to_supports_evaluation_of_breakpoint_conditions
= remote_supports_cond_breakpoints
;
11392 remote_ops
.to_can_run_breakpoint_commands
= remote_can_run_breakpoint_commands
;
11393 remote_ops
.to_trace_init
= remote_trace_init
;
11394 remote_ops
.to_download_tracepoint
= remote_download_tracepoint
;
11395 remote_ops
.to_can_download_tracepoint
= remote_can_download_tracepoint
;
11396 remote_ops
.to_download_trace_state_variable
11397 = remote_download_trace_state_variable
;
11398 remote_ops
.to_enable_tracepoint
= remote_enable_tracepoint
;
11399 remote_ops
.to_disable_tracepoint
= remote_disable_tracepoint
;
11400 remote_ops
.to_trace_set_readonly_regions
= remote_trace_set_readonly_regions
;
11401 remote_ops
.to_trace_start
= remote_trace_start
;
11402 remote_ops
.to_get_trace_status
= remote_get_trace_status
;
11403 remote_ops
.to_get_tracepoint_status
= remote_get_tracepoint_status
;
11404 remote_ops
.to_trace_stop
= remote_trace_stop
;
11405 remote_ops
.to_trace_find
= remote_trace_find
;
11406 remote_ops
.to_get_trace_state_variable_value
11407 = remote_get_trace_state_variable_value
;
11408 remote_ops
.to_save_trace_data
= remote_save_trace_data
;
11409 remote_ops
.to_upload_tracepoints
= remote_upload_tracepoints
;
11410 remote_ops
.to_upload_trace_state_variables
11411 = remote_upload_trace_state_variables
;
11412 remote_ops
.to_get_raw_trace_data
= remote_get_raw_trace_data
;
11413 remote_ops
.to_get_min_fast_tracepoint_insn_len
= remote_get_min_fast_tracepoint_insn_len
;
11414 remote_ops
.to_set_disconnected_tracing
= remote_set_disconnected_tracing
;
11415 remote_ops
.to_set_circular_trace_buffer
= remote_set_circular_trace_buffer
;
11416 remote_ops
.to_set_trace_buffer_size
= remote_set_trace_buffer_size
;
11417 remote_ops
.to_set_trace_notes
= remote_set_trace_notes
;
11418 remote_ops
.to_core_of_thread
= remote_core_of_thread
;
11419 remote_ops
.to_verify_memory
= remote_verify_memory
;
11420 remote_ops
.to_get_tib_address
= remote_get_tib_address
;
11421 remote_ops
.to_set_permissions
= remote_set_permissions
;
11422 remote_ops
.to_static_tracepoint_marker_at
11423 = remote_static_tracepoint_marker_at
;
11424 remote_ops
.to_static_tracepoint_markers_by_strid
11425 = remote_static_tracepoint_markers_by_strid
;
11426 remote_ops
.to_traceframe_info
= remote_traceframe_info
;
11427 remote_ops
.to_use_agent
= remote_use_agent
;
11428 remote_ops
.to_can_use_agent
= remote_can_use_agent
;
11429 remote_ops
.to_supports_btrace
= remote_supports_btrace
;
11430 remote_ops
.to_enable_btrace
= remote_enable_btrace
;
11431 remote_ops
.to_disable_btrace
= remote_disable_btrace
;
11432 remote_ops
.to_teardown_btrace
= remote_teardown_btrace
;
11433 remote_ops
.to_read_btrace
= remote_read_btrace
;
11436 /* Set up the extended remote vector by making a copy of the standard
11437 remote vector and adding to it. */
11440 init_extended_remote_ops (void)
11442 extended_remote_ops
= remote_ops
;
11444 extended_remote_ops
.to_shortname
= "extended-remote";
11445 extended_remote_ops
.to_longname
=
11446 "Extended remote serial target in gdb-specific protocol";
11447 extended_remote_ops
.to_doc
=
11448 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
11449 Specify the serial device it is connected to (e.g. /dev/ttya).";
11450 extended_remote_ops
.to_open
= extended_remote_open
;
11451 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
11452 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
11453 extended_remote_ops
.to_detach
= extended_remote_detach
;
11454 extended_remote_ops
.to_attach
= extended_remote_attach
;
11455 extended_remote_ops
.to_kill
= extended_remote_kill
;
11456 extended_remote_ops
.to_supports_disable_randomization
11457 = extended_remote_supports_disable_randomization
;
11461 remote_can_async_p (void)
11463 if (!target_async_permitted
)
11464 /* We only enable async when the user specifically asks for it. */
11467 /* We're async whenever the serial device is. */
11468 return serial_can_async_p (remote_desc
);
11472 remote_is_async_p (void)
11474 if (!target_async_permitted
)
11475 /* We only enable async when the user specifically asks for it. */
11478 /* We're async whenever the serial device is. */
11479 return serial_is_async_p (remote_desc
);
11482 /* Pass the SERIAL event on and up to the client. One day this code
11483 will be able to delay notifying the client of an event until the
11484 point where an entire packet has been received. */
11486 static void (*async_client_callback
) (enum inferior_event_type event_type
,
11488 static void *async_client_context
;
11489 static serial_event_ftype remote_async_serial_handler
;
11492 remote_async_serial_handler (struct serial
*scb
, void *context
)
11494 /* Don't propogate error information up to the client. Instead let
11495 the client find out about the error by querying the target. */
11496 async_client_callback (INF_REG_EVENT
, async_client_context
);
11500 remote_async_inferior_event_handler (gdb_client_data data
)
11502 inferior_event_handler (INF_REG_EVENT
, NULL
);
11506 remote_async (void (*callback
) (enum inferior_event_type event_type
,
11507 void *context
), void *context
)
11509 if (callback
!= NULL
)
11511 serial_async (remote_desc
, remote_async_serial_handler
, NULL
);
11512 async_client_callback
= callback
;
11513 async_client_context
= context
;
11516 serial_async (remote_desc
, NULL
, NULL
);
11520 set_remote_cmd (char *args
, int from_tty
)
11522 help_list (remote_set_cmdlist
, "set remote ", -1, gdb_stdout
);
11526 show_remote_cmd (char *args
, int from_tty
)
11528 /* We can't just use cmd_show_list here, because we want to skip
11529 the redundant "show remote Z-packet" and the legacy aliases. */
11530 struct cleanup
*showlist_chain
;
11531 struct cmd_list_element
*list
= remote_show_cmdlist
;
11532 struct ui_out
*uiout
= current_uiout
;
11534 showlist_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "showlist");
11535 for (; list
!= NULL
; list
= list
->next
)
11536 if (strcmp (list
->name
, "Z-packet") == 0)
11538 else if (list
->type
== not_set_cmd
)
11539 /* Alias commands are exactly like the original, except they
11540 don't have the normal type. */
11544 struct cleanup
*option_chain
11545 = make_cleanup_ui_out_tuple_begin_end (uiout
, "option");
11547 ui_out_field_string (uiout
, "name", list
->name
);
11548 ui_out_text (uiout
, ": ");
11549 if (list
->type
== show_cmd
)
11550 do_show_command ((char *) NULL
, from_tty
, list
);
11552 cmd_func (list
, NULL
, from_tty
);
11553 /* Close the tuple. */
11554 do_cleanups (option_chain
);
11557 /* Close the tuple. */
11558 do_cleanups (showlist_chain
);
11562 /* Function to be called whenever a new objfile (shlib) is detected. */
11564 remote_new_objfile (struct objfile
*objfile
)
11566 if (remote_desc
!= 0) /* Have a remote connection. */
11567 remote_check_symbols (objfile
);
11570 /* Pull all the tracepoints defined on the target and create local
11571 data structures representing them. We don't want to create real
11572 tracepoints yet, we don't want to mess up the user's existing
11576 remote_upload_tracepoints (struct uploaded_tp
**utpp
)
11578 struct remote_state
*rs
= get_remote_state ();
11581 /* Ask for a first packet of tracepoint definition. */
11583 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11585 while (*p
&& *p
!= 'l')
11587 parse_tracepoint_definition (p
, utpp
);
11588 /* Ask for another packet of tracepoint definition. */
11590 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11597 remote_upload_trace_state_variables (struct uploaded_tsv
**utsvp
)
11599 struct remote_state
*rs
= get_remote_state ();
11602 /* Ask for a first packet of variable definition. */
11604 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11606 while (*p
&& *p
!= 'l')
11608 parse_tsv_definition (p
, utsvp
);
11609 /* Ask for another packet of variable definition. */
11611 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11618 _initialize_remote (void)
11620 struct remote_state
*rs
;
11621 struct cmd_list_element
*cmd
;
11622 const char *cmd_name
;
11624 /* architecture specific data */
11625 remote_gdbarch_data_handle
=
11626 gdbarch_data_register_post_init (init_remote_state
);
11627 remote_g_packet_data_handle
=
11628 gdbarch_data_register_pre_init (remote_g_packet_data_init
);
11630 /* Initialize the per-target state. At the moment there is only one
11631 of these, not one per target. Only one target is active at a
11632 time. The default buffer size is unimportant; it will be expanded
11633 whenever a larger buffer is needed. */
11634 rs
= get_remote_state_raw ();
11635 rs
->buf_size
= 400;
11636 rs
->buf
= xmalloc (rs
->buf_size
);
11638 init_remote_ops ();
11639 add_target (&remote_ops
);
11641 init_extended_remote_ops ();
11642 add_target (&extended_remote_ops
);
11644 /* Hook into new objfile notification. */
11645 observer_attach_new_objfile (remote_new_objfile
);
11646 /* We're no longer interested in notification events of an inferior
11648 observer_attach_inferior_exit (discard_pending_stop_replies
);
11650 /* Set up signal handlers. */
11651 sigint_remote_token
=
11652 create_async_signal_handler (async_remote_interrupt
, NULL
);
11653 sigint_remote_twice_token
=
11654 create_async_signal_handler (async_remote_interrupt_twice
, NULL
);
11657 init_remote_threadtests ();
11660 stop_reply_queue
= QUEUE_alloc (stop_reply_p
, stop_reply_xfree
);
11661 /* set/show remote ... */
11663 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, _("\
11664 Remote protocol specific variables\n\
11665 Configure various remote-protocol specific variables such as\n\
11666 the packets being used"),
11667 &remote_set_cmdlist
, "set remote ",
11668 0 /* allow-unknown */, &setlist
);
11669 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, _("\
11670 Remote protocol specific variables\n\
11671 Configure various remote-protocol specific variables such as\n\
11672 the packets being used"),
11673 &remote_show_cmdlist
, "show remote ",
11674 0 /* allow-unknown */, &showlist
);
11676 add_cmd ("compare-sections", class_obscure
, compare_sections_command
, _("\
11677 Compare section data on target to the exec file.\n\
11678 Argument is a single section name (default: all loaded sections)."),
11681 add_cmd ("packet", class_maintenance
, packet_command
, _("\
11682 Send an arbitrary packet to a remote target.\n\
11683 maintenance packet TEXT\n\
11684 If GDB is talking to an inferior via the GDB serial protocol, then\n\
11685 this command sends the string TEXT to the inferior, and displays the\n\
11686 response packet. GDB supplies the initial `$' character, and the\n\
11687 terminating `#' character and checksum."),
11690 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
, _("\
11691 Set whether to send break if interrupted."), _("\
11692 Show whether to send break if interrupted."), _("\
11693 If set, a break, instead of a cntrl-c, is sent to the remote target."),
11694 set_remotebreak
, show_remotebreak
,
11695 &setlist
, &showlist
);
11696 cmd_name
= "remotebreak";
11697 cmd
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
11698 deprecate_cmd (cmd
, "set remote interrupt-sequence");
11699 cmd_name
= "remotebreak"; /* needed because lookup_cmd updates the pointer */
11700 cmd
= lookup_cmd (&cmd_name
, showlist
, "", -1, 1);
11701 deprecate_cmd (cmd
, "show remote interrupt-sequence");
11703 add_setshow_enum_cmd ("interrupt-sequence", class_support
,
11704 interrupt_sequence_modes
, &interrupt_sequence_mode
,
11706 Set interrupt sequence to remote target."), _("\
11707 Show interrupt sequence to remote target."), _("\
11708 Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."),
11709 NULL
, show_interrupt_sequence
,
11710 &remote_set_cmdlist
,
11711 &remote_show_cmdlist
);
11713 add_setshow_boolean_cmd ("interrupt-on-connect", class_support
,
11714 &interrupt_on_connect
, _("\
11715 Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
11716 Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
11717 If set, interrupt sequence is sent to remote target."),
11719 &remote_set_cmdlist
, &remote_show_cmdlist
);
11721 /* Install commands for configuring memory read/write packets. */
11723 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
, _("\
11724 Set the maximum number of bytes per memory write packet (deprecated)."),
11726 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
, _("\
11727 Show the maximum number of bytes per memory write packet (deprecated)."),
11729 add_cmd ("memory-write-packet-size", no_class
,
11730 set_memory_write_packet_size
, _("\
11731 Set the maximum number of bytes per memory-write packet.\n\
11732 Specify the number of bytes in a packet or 0 (zero) for the\n\
11733 default packet size. The actual limit is further reduced\n\
11734 dependent on the target. Specify ``fixed'' to disable the\n\
11735 further restriction and ``limit'' to enable that restriction."),
11736 &remote_set_cmdlist
);
11737 add_cmd ("memory-read-packet-size", no_class
,
11738 set_memory_read_packet_size
, _("\
11739 Set the maximum number of bytes per memory-read packet.\n\
11740 Specify the number of bytes in a packet or 0 (zero) for the\n\
11741 default packet size. The actual limit is further reduced\n\
11742 dependent on the target. Specify ``fixed'' to disable the\n\
11743 further restriction and ``limit'' to enable that restriction."),
11744 &remote_set_cmdlist
);
11745 add_cmd ("memory-write-packet-size", no_class
,
11746 show_memory_write_packet_size
,
11747 _("Show the maximum number of bytes per memory-write packet."),
11748 &remote_show_cmdlist
);
11749 add_cmd ("memory-read-packet-size", no_class
,
11750 show_memory_read_packet_size
,
11751 _("Show the maximum number of bytes per memory-read packet."),
11752 &remote_show_cmdlist
);
11754 add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class
,
11755 &remote_hw_watchpoint_limit
, _("\
11756 Set the maximum number of target hardware watchpoints."), _("\
11757 Show the maximum number of target hardware watchpoints."), _("\
11758 Specify a negative limit for unlimited."),
11759 NULL
, NULL
, /* FIXME: i18n: The maximum
11760 number of target hardware
11761 watchpoints is %s. */
11762 &remote_set_cmdlist
, &remote_show_cmdlist
);
11763 add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class
,
11764 &remote_hw_watchpoint_length_limit
, _("\
11765 Set the maximum length (in bytes) of a target hardware watchpoint."), _("\
11766 Show the maximum length (in bytes) of a target hardware watchpoint."), _("\
11767 Specify a negative limit for unlimited."),
11768 NULL
, NULL
, /* FIXME: i18n: The maximum
11769 length (in bytes) of a target
11770 hardware watchpoint is %s. */
11771 &remote_set_cmdlist
, &remote_show_cmdlist
);
11772 add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class
,
11773 &remote_hw_breakpoint_limit
, _("\
11774 Set the maximum number of target hardware breakpoints."), _("\
11775 Show the maximum number of target hardware breakpoints."), _("\
11776 Specify a negative limit for unlimited."),
11777 NULL
, NULL
, /* FIXME: i18n: The maximum
11778 number of target hardware
11779 breakpoints is %s. */
11780 &remote_set_cmdlist
, &remote_show_cmdlist
);
11782 add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure
,
11783 &remote_address_size
, _("\
11784 Set the maximum size of the address (in bits) in a memory packet."), _("\
11785 Show the maximum size of the address (in bits) in a memory packet."), NULL
,
11787 NULL
, /* FIXME: i18n: */
11788 &setlist
, &showlist
);
11790 add_packet_config_cmd (&remote_protocol_packets
[PACKET_X
],
11791 "X", "binary-download", 1);
11793 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vCont
],
11794 "vCont", "verbose-resume", 0);
11796 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QPassSignals
],
11797 "QPassSignals", "pass-signals", 0);
11799 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QProgramSignals
],
11800 "QProgramSignals", "program-signals", 0);
11802 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSymbol
],
11803 "qSymbol", "symbol-lookup", 0);
11805 add_packet_config_cmd (&remote_protocol_packets
[PACKET_P
],
11806 "P", "set-register", 1);
11808 add_packet_config_cmd (&remote_protocol_packets
[PACKET_p
],
11809 "p", "fetch-register", 1);
11811 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
],
11812 "Z0", "software-breakpoint", 0);
11814 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z1
],
11815 "Z1", "hardware-breakpoint", 0);
11817 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z2
],
11818 "Z2", "write-watchpoint", 0);
11820 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z3
],
11821 "Z3", "read-watchpoint", 0);
11823 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z4
],
11824 "Z4", "access-watchpoint", 0);
11826 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_auxv
],
11827 "qXfer:auxv:read", "read-aux-vector", 0);
11829 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_features
],
11830 "qXfer:features:read", "target-features", 0);
11832 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries
],
11833 "qXfer:libraries:read", "library-info", 0);
11835 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries_svr4
],
11836 "qXfer:libraries-svr4:read", "library-info-svr4", 0);
11838 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_memory_map
],
11839 "qXfer:memory-map:read", "memory-map", 0);
11841 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_read
],
11842 "qXfer:spu:read", "read-spu-object", 0);
11844 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_write
],
11845 "qXfer:spu:write", "write-spu-object", 0);
11847 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_osdata
],
11848 "qXfer:osdata:read", "osdata", 0);
11850 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_threads
],
11851 "qXfer:threads:read", "threads", 0);
11853 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_read
],
11854 "qXfer:siginfo:read", "read-siginfo-object", 0);
11856 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_write
],
11857 "qXfer:siginfo:write", "write-siginfo-object", 0);
11859 add_packet_config_cmd
11860 (&remote_protocol_packets
[PACKET_qXfer_traceframe_info
],
11861 "qXfer:trace-frame-info:read", "traceframe-info", 0);
11863 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_uib
],
11864 "qXfer:uib:read", "unwind-info-block", 0);
11866 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTLSAddr
],
11867 "qGetTLSAddr", "get-thread-local-storage-address",
11870 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTIBAddr
],
11871 "qGetTIBAddr", "get-thread-information-block-address",
11874 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bc
],
11875 "bc", "reverse-continue", 0);
11877 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bs
],
11878 "bs", "reverse-step", 0);
11880 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSupported
],
11881 "qSupported", "supported-packets", 0);
11883 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSearch_memory
],
11884 "qSearch:memory", "search-memory", 0);
11886 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qTStatus
],
11887 "qTStatus", "trace-status", 0);
11889 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_open
],
11890 "vFile:open", "hostio-open", 0);
11892 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pread
],
11893 "vFile:pread", "hostio-pread", 0);
11895 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pwrite
],
11896 "vFile:pwrite", "hostio-pwrite", 0);
11898 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_close
],
11899 "vFile:close", "hostio-close", 0);
11901 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_unlink
],
11902 "vFile:unlink", "hostio-unlink", 0);
11904 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_readlink
],
11905 "vFile:readlink", "hostio-readlink", 0);
11907 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vAttach
],
11908 "vAttach", "attach", 0);
11910 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vRun
],
11913 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QStartNoAckMode
],
11914 "QStartNoAckMode", "noack", 0);
11916 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vKill
],
11917 "vKill", "kill", 0);
11919 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qAttached
],
11920 "qAttached", "query-attached", 0);
11922 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalTracepoints
],
11923 "ConditionalTracepoints",
11924 "conditional-tracepoints", 0);
11926 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalBreakpoints
],
11927 "ConditionalBreakpoints",
11928 "conditional-breakpoints", 0);
11930 add_packet_config_cmd (&remote_protocol_packets
[PACKET_BreakpointCommands
],
11931 "BreakpointCommands",
11932 "breakpoint-commands", 0);
11934 add_packet_config_cmd (&remote_protocol_packets
[PACKET_FastTracepoints
],
11935 "FastTracepoints", "fast-tracepoints", 0);
11937 add_packet_config_cmd (&remote_protocol_packets
[PACKET_TracepointSource
],
11938 "TracepointSource", "TracepointSource", 0);
11940 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAllow
],
11941 "QAllow", "allow", 0);
11943 add_packet_config_cmd (&remote_protocol_packets
[PACKET_StaticTracepoints
],
11944 "StaticTracepoints", "static-tracepoints", 0);
11946 add_packet_config_cmd (&remote_protocol_packets
[PACKET_InstallInTrace
],
11947 "InstallInTrace", "install-in-trace", 0);
11949 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_statictrace_read
],
11950 "qXfer:statictrace:read", "read-sdata-object", 0);
11952 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_fdpic
],
11953 "qXfer:fdpic:read", "read-fdpic-loadmap", 0);
11955 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QDisableRandomization
],
11956 "QDisableRandomization", "disable-randomization", 0);
11958 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAgent
],
11959 "QAgent", "agent", 0);
11961 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QTBuffer_size
],
11962 "QTBuffer:size", "trace-buffer-size", 0);
11964 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_off
],
11965 "Qbtrace:off", "disable-btrace", 0);
11967 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_bts
],
11968 "Qbtrace:bts", "enable-btrace", 0);
11970 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_btrace
],
11971 "qXfer:btrace", "read-btrace", 0);
11973 /* Keep the old ``set remote Z-packet ...'' working. Each individual
11974 Z sub-packet has its own set and show commands, but users may
11975 have sets to this variable in their .gdbinit files (or in their
11977 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
11978 &remote_Z_packet_detect
, _("\
11979 Set use of remote protocol `Z' packets"), _("\
11980 Show use of remote protocol `Z' packets "), _("\
11981 When set, GDB will attempt to use the remote breakpoint and watchpoint\n\
11983 set_remote_protocol_Z_packet_cmd
,
11984 show_remote_protocol_Z_packet_cmd
,
11985 /* FIXME: i18n: Use of remote protocol
11986 `Z' packets is %s. */
11987 &remote_set_cmdlist
, &remote_show_cmdlist
);
11989 add_prefix_cmd ("remote", class_files
, remote_command
, _("\
11990 Manipulate files on the remote system\n\
11991 Transfer files to and from the remote target system."),
11992 &remote_cmdlist
, "remote ",
11993 0 /* allow-unknown */, &cmdlist
);
11995 add_cmd ("put", class_files
, remote_put_command
,
11996 _("Copy a local file to the remote system."),
11999 add_cmd ("get", class_files
, remote_get_command
,
12000 _("Copy a remote file to the local system."),
12003 add_cmd ("delete", class_files
, remote_delete_command
,
12004 _("Delete a remote file."),
12007 remote_exec_file
= xstrdup ("");
12008 add_setshow_string_noescape_cmd ("exec-file", class_files
,
12009 &remote_exec_file
, _("\
12010 Set the remote pathname for \"run\""), _("\
12011 Show the remote pathname for \"run\""), NULL
, NULL
, NULL
,
12012 &remote_set_cmdlist
, &remote_show_cmdlist
);
12014 /* Eventually initialize fileio. See fileio.c */
12015 initialize_remote_fileio (remote_set_cmdlist
, remote_show_cmdlist
);
12017 /* Take advantage of the fact that the LWP field is not used, to tag
12018 special ptids with it set to != 0. */
12019 magic_null_ptid
= ptid_build (42000, 1, -1);
12020 not_sent_ptid
= ptid_build (42000, 1, -2);
12021 any_thread_ptid
= ptid_build (42000, 1, 0);
12023 target_buf_size
= 2048;
12024 target_buf
= xmalloc (target_buf_size
);